42131530 has 32 divisors (see below), whose sum is σ = 89018496. Its totient is φ = 14053824.

The previous prime is 42131527. The next prime is 42131549. The reversal of 42131530 is 3513124.

It is a junction number, because it is equal to n+sod(n) for n = 42131498 and 42131507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5544 + ... + 10723.

It is an arithmetic number, because the mean of its divisors is an integer number (2781828).

Almost surely, 2^42131530 is an apocalyptic number.

42131530 is an abundant number, since it is smaller than the sum of its proper divisors (46886966).

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

42131530 is a wasteful number, since it uses less digits than its factorization.

42131530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16318.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 42131530 is about 6490.8805257838. The cubic root of 42131530 is about 347.9651449215.

Adding to 42131530 its reverse (3513124), we get a palindrome (45644654).

The spelling of 42131530 in words is "forty-two million, one hundred thirty-one thousand, five hundred thirty".