42642113 has 4 divisors (see below), whose sum is σ = 43549440. Its totient is φ = 41734788.

The previous prime is 42642107. The next prime is 42642133. The reversal of 42642113 is 31124624.

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.

It is a cyclic number.

It is not a de Polignac number, because 42642113 - 2⁸ = 42641857 is a prime.

It is a super-2 number, since 2×42642113² = 3636699602209538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42642133) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 453593 + ... + 453686.

It is an arithmetic number, because the mean of its divisors is an integer number (10887360).

Almost surely, 2^42642113 is an apocalyptic number.

It is an amenable number.

42642113 is a deficient number, since it is larger than the sum of its proper divisors (907327).

42642113 is an equidigital number, since it uses as much as digits as its factorization.

42642113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907326.

The product of its digits is 1152, while the sum is 23.

The square root of 42642113 is about 6530.0928783594. The cubic root of 42642113 is about 349.3651430213.

Adding to 42642113 its reverse (31124624), we get a palindrome (73766737).

The spelling of 42642113 in words is "forty-two million, six hundred forty-two thousand, one hundred thirteen".