42160531 has 16 divisors (see below), whose sum is σ = 49694400. Its totient is φ = 35750400.

The previous prime is 42160523. The next prime is 42160537. The reversal of 42160531 is 13506124.

It is not a de Polignac number, because 42160531 - 2³ = 42160523 is a prime.

It is a super-2 number, since 2×42160531² = 3555020748403922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42160537) 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 15 ways as a sum of consecutive naturals, for example, 34035 + ... + 35251.

It is an arithmetic number, because the mean of its divisors is an integer number (3105900).

Almost surely, 2^42160531 is an apocalyptic number.

42160531 is a deficient number, since it is larger than the sum of its proper divisors (7533869).

42160531 is a wasteful number, since it uses less digits than its factorization.

42160531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 42160531 is about 6493.1141218987. The cubic root of 42160531 is about 348.0449665548.

Adding to 42160531 its reverse (13506124), we get a palindrome (55666655).

The spelling of 42160531 in words is "forty-two million, one hundred sixty thousand, five hundred thirty-one".