113421442 has 4 divisors (see below), whose sum is σ = 170132166. Its totient is φ = 56710720.

The previous prime is 113421439. The next prime is 113421493. The reversal of 113421442 is 244124311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244124311 = 4201 ⋅58111.

It can be written as a sum of positive squares in only one way, i.e., 112169281 + 1252161 = 10591^2 + 1119^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28355359 + ... + 28355362.

Almost surely, 2^113421442 is an apocalyptic number.

113421442 is a deficient number, since it is larger than the sum of its proper divisors (56710724).

113421442 is an equidigital number, since it uses as much as digits as its factorization.

113421442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56710723.

The product of its digits is 768, while the sum is 22.

The square root of 113421442 is about 10649.9503285227. The cubic root of 113421442 is about 484.0590990603.

Adding to 113421442 its reverse (244124311), we get a palindrome (357545753).

The spelling of 113421442 in words is "one hundred thirteen million, four hundred twenty-one thousand, four hundred forty-two".