131030042 has 32 divisors (see below), whose sum is σ = 243069120. Its totient is φ = 52081920.

The previous prime is 131029993. The next prime is 131030047. The reversal of 131030042 is 240030131.

It is a junction number, because it is equal to n+sod(n) for n = 131029999 and 131030026.

It is not an unprimeable number, because it can be changed into a prime (131030047) 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, 6623 + ... + 17490.

It is an arithmetic number, because the mean of its divisors is an integer number (7595910).

Almost surely, 2^131030042 is an apocalyptic number.

131030042 is a deficient number, since it is larger than the sum of its proper divisors (112039078).

131030042 is a wasteful number, since it uses less digits than its factorization.

131030042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24158.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 131030042 is about 11446.8354578897. The cubic root of 131030042 is about 507.9141282301.

Adding to 131030042 its reverse (240030131), we get a palindrome (371060173).

The spelling of 131030042 in words is "one hundred thirty-one million, thirty thousand, forty-two".