124100121 has 4 divisors (see below), whose sum is σ = 165466832. Its totient is φ = 82733412.

The previous prime is 124100117. The next prime is 124100131. The reversal of 124100121 is 121001421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121001421 = 3 ⋅40333807.

It is not a de Polignac number, because 124100121 - 2² = 124100117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124100097 and 124100106.

It is not an unprimeable number, because it can be changed into a prime (124100131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20683351 + ... + 20683356.

It is an arithmetic number, because the mean of its divisors is an integer number (41366708).

Almost surely, 2^124100121 is an apocalyptic number.

It is an amenable number.

124100121 is a deficient number, since it is larger than the sum of its proper divisors (41366711).

124100121 is an equidigital number, since it uses as much as digits as its factorization.

124100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41366710.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 124100121 is about 11140.0233841765. The cubic root of 124100121 is about 498.7972705368.

Adding to 124100121 its reverse (121001421), we get a palindrome (245101542).

The spelling of 124100121 in words is "one hundred twenty-four million, one hundred thousand, one hundred twenty-one".