42048931 has 2 divisors, whose sum is σ = 42048932. Its totient is φ = 42048930.

The previous prime is 42048917. The next prime is 42048961. The reversal of 42048931 is 13984024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42048931 - 2¹⁹ = 41524643 is a prime.

It is a super-2 number, since 2×42048931² = 3536225196485522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42048893 and 42048902.

It is not a weakly prime, because it can be changed into another prime (42048901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21024465 + 21024466.

It is an arithmetic number, because the mean of its divisors is an integer number (21024466).

Almost surely, 2^42048931 is an apocalyptic number.

42048931 is a deficient number, since it is larger than the sum of its proper divisors (1).

42048931 is an equidigital number, since it uses as much as digits as its factorization.

42048931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 42048931 is about 6484.5147081335. The cubic root of 42048931 is about 347.7376005611.

The spelling of 42048931 in words is "forty-two million, forty-eight thousand, nine hundred thirty-one".