42625031 has 8 divisors (see below), whose sum is σ = 44723328. Its totient is φ = 40572000.

The previous prime is 42625027. The next prime is 42625043. The reversal of 42625031 is 13052624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42625031 - 2² = 42625027 is a prime.

It is a super-2 number, since 2×42625031² = 3633786535501922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42624988 and 42625006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42625021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9380 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (5590416).

Almost surely, 2^42625031 is an apocalyptic number.

42625031 is a deficient number, since it is larger than the sum of its proper divisors (2098297).

42625031 is a wasteful number, since it uses less digits than its factorization.

42625031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22633.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 42625031 is about 6528.7848027026. The cubic root of 42625031 is about 349.3184860741.

Adding to 42625031 its reverse (13052624), we get a palindrome (55677655).

The spelling of 42625031 in words is "forty-two million, six hundred twenty-five thousand, thirty-one".