42674531 has 2 divisors, whose sum is σ = 42674532. Its totient is φ = 42674530.

The previous prime is 42674509. The next prime is 42674537. The reversal of 42674531 is 13547624.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42674531 is a prime.

It is a super-2 number, since 2×42674531² = 3642231192139922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42674537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21337265 + 21337266.

It is an arithmetic number, because the mean of its divisors is an integer number (21337266).

Almost surely, 2^42674531 is an apocalyptic number.

42674531 is a deficient number, since it is larger than the sum of its proper divisors (1).

42674531 is an equidigital number, since it uses as much as digits as its factorization.

42674531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 32.

The square root of 42674531 is about 6532.5746073045. The cubic root of 42674531 is about 349.4536537255.

The spelling of 42674531 in words is "forty-two million, six hundred seventy-four thousand, five hundred thirty-one".