113421243 has 32 divisors (see below), whose sum is σ = 169456896. Its totient is φ = 67022208.

The previous prime is 113421193. The next prime is 113421271. The reversal of 113421243 is 342124311.

It is not a de Polignac number, because 113421243 - 2⁸ = 113420987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113421043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119296 + ... + 120242.

It is an arithmetic number, because the mean of its divisors is an integer number (5295528).

Almost surely, 2^113421243 is an apocalyptic number.

113421243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

113421243 is a deficient number, since it is larger than the sum of its proper divisors (56035653).

113421243 is a wasteful number, since it uses less digits than its factorization.

113421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083.

The product of its digits is 576, while the sum is 21.

The square root of 113421243 is about 10649.9409857520. The cubic root of 113421243 is about 484.0588159633.

Adding to 113421243 its reverse (342124311), we get a palindrome (455545554).

It can be divided in two parts, 11 and 3421243, that multiplied together give a palindrome (37633673).

The spelling of 113421243 in words is "one hundred thirteen million, four hundred twenty-one thousand, two hundred forty-three".