42115131 has 6 divisors (see below), whose sum is σ = 60832980. Its totient is φ = 28076748.

The previous prime is 42115127. The next prime is 42115133. The reversal of 42115131 is 13151124.

It is not a de Polignac number, because 42115131 - 2² = 42115127 is a prime.

It is a super-2 number, since 2×42115131² = 3547368518294322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42115133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2339721 + ... + 2339738.

It is an arithmetic number, because the mean of its divisors is an integer number (10138830).

Almost surely, 2^42115131 is an apocalyptic number.

42115131 is a deficient number, since it is larger than the sum of its proper divisors (18717849).

42115131 is a wasteful number, since it uses less digits than its factorization.

42115131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679465 (or 4679462 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 42115131 is about 6489.6171689862. The cubic root of 42115131 is about 347.9199925069.

Adding to 42115131 its reverse (13151124), we get a palindrome (55266255).

The spelling of 42115131 in words is "forty-two million, one hundred fifteen thousand, one hundred thirty-one".