113102421 has 16 divisors (see below), whose sum is σ = 158999040. Its totient is φ = 71316720.

The previous prime is 113102417. The next prime is 113102453. The reversal of 113102421 is 124201311.

It is not a de Polignac number, because 113102421 - 2² = 113102417 is a prime.

It is a super-2 number, since 2×113102421² = 25584315272122482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113102421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113102401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45706 + ... + 48116.

It is an arithmetic number, because the mean of its divisors is an integer number (9937440).

Almost surely, 2^113102421 is an apocalyptic number.

It is an amenable number.

113102421 is a deficient number, since it is larger than the sum of its proper divisors (45896619).

113102421 is a wasteful number, since it uses less digits than its factorization.

113102421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256.

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

The square root of 113102421 is about 10634.9622002149. The cubic root of 113102421 is about 483.6048344881.

Adding to 113102421 its reverse (124201311), we get a palindrome (237303732).

It can be divided in two parts, 11310 and 2421, that added together give a palindrome (13731).

The spelling of 113102421 in words is "one hundred thirteen million, one hundred two thousand, four hundred twenty-one".