42131370 has 32 divisors (see below), whose sum is σ = 101687040. Its totient is φ = 11171520.

The previous prime is 42131363. The next prime is 42131371. The reversal of 42131370 is 7313124.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42131371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1551 + ... + 9309.

It is an arithmetic number, because the mean of its divisors is an integer number (3177720).

Almost surely, 2^42131370 is an apocalyptic number.

42131370 is an abundant number, since it is smaller than the sum of its proper divisors (59555670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42131370 is a wasteful number, since it uses less digits than its factorization.

42131370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7950.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 42131370 is about 6490.8682007879. The cubic root of 42131370 is about 347.9647044399.

Adding to 42131370 its reverse (7313124), we get a palindrome (49444494).

The spelling of 42131370 in words is "forty-two million, one hundred thirty-one thousand, three hundred seventy".