42252131 has 4 divisors (see below), whose sum is σ = 42286200. Its totient is φ = 42218064.

The previous prime is 42252109. The next prime is 42252137. The reversal of 42252131 is 13125224.

42252131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42252131 - 2¹⁰ = 42251107 is a prime.

It is a super-2 number, since 2×42252131² = 3570485148082322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42252137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15101 + ... + 17678.

It is an arithmetic number, because the mean of its divisors is an integer number (10571550).

Almost surely, 2^42252131 is an apocalyptic number.

42252131 is a deficient number, since it is larger than the sum of its proper divisors (34069).

42252131 is a wasteful number, since it uses less digits than its factorization.

42252131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34068.

The product of its digits is 480, while the sum is 20.

The square root of 42252131 is about 6500.1639210100. The cubic root of 42252131 is about 348.2968439809.

Adding to 42252131 its reverse (13125224), we get a palindrome (55377355).

The spelling of 42252131 in words is "forty-two million, two hundred fifty-two thousand, one hundred thirty-one".