123620 has 24 divisors (see below), whose sum is σ = 297024. Its totient is φ = 42336.

The previous prime is 123619. The next prime is 123631. The reversal of 123620 is 26321.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 123595 and 123604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302 + ... + 581.

It is an arithmetic number, because the mean of its divisors is an integer number (12376).

2¹²³⁶²⁰ is an apocalyptic number.

123620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123620 is an abundant number, since it is smaller than the sum of its proper divisors (173404).

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

123620 is a wasteful number, since it uses less digits than its factorization.

123620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 123620 is about 351.5963594806. The cubic root of 123620 is about 49.8153186962.

Adding to 123620 its reverse (26321), we get a palindrome (149941).

The spelling of 123620 in words is "one hundred twenty-three thousand, six hundred twenty".