120100 has 18 divisors (see below), whose sum is σ = 260834. Its totient is φ = 48000.

The previous prime is 120097. The next prime is 120103. The reversal of 120100 is 1021.

120100 is nontrivially palindromic in base 7.

120100 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (120097) and next prime (120103).

It can be written as a sum of positive squares in 3 ways, for example, as 1764 + 118336 = 42^2 + 344^2 .

It is a Harshad number since it is a multiple of its sum of digits (4).

120100 is an undulating number in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120103) by changing a digit.

It is a nontrivial repunit in base 49.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 501 + ... + 700.

2¹²⁰¹⁰⁰ is an apocalyptic number.

120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120100 is an abundant number, since it is smaller than the sum of its proper divisors (140734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120100 is a wasteful number, since it uses less digits than its factorization.

120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 120100 is about 346.5544690233. The cubic root of 120100 is about 49.3379388607.

Adding to 120100 its reverse (1021), we get a palindrome (121121).

The spelling of 120100 in words is "one hundred twenty thousand, one hundred", and thus it is an iban number.