113402121 has 48 divisors (see below), whose sum is σ = 194431104. Its totient is φ = 58308096.

The previous prime is 113402099. The next prime is 113402147. The reversal of 113402121 is 121204311.

It is not a de Polignac number, because 113402121 - 2¹⁰ = 113401097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113402121.

It is not an unprimeable number, because it can be changed into a prime (113402171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56491 + ... + 58463.

It is an arithmetic number, because the mean of its divisors is an integer number (4050648).

Almost surely, 2^113402121 is an apocalyptic number.

It is an amenable number.

113402121 is a deficient number, since it is larger than the sum of its proper divisors (81028983).

113402121 is a wasteful number, since it uses less digits than its factorization.

113402121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030 (or 2023 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 113402121 is about 10649.0431964567. The cubic root of 113402121 is about 484.0316114977.

Adding to 113402121 its reverse (121204311), we get a palindrome (234606432).

The spelling of 113402121 in words is "one hundred thirteen million, four hundred two thousand, one hundred twenty-one".