42512867 has 2 divisors, whose sum is σ = 42512868. Its totient is φ = 42512866.

The previous prime is 42512851. The next prime is 42512879. The reversal of 42512867 is 76821524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42512867 - 2⁴ = 42512851 is a prime.

It is not a weakly prime, because it can be changed into another prime (42512167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21256433 + 21256434.

It is an arithmetic number, because the mean of its divisors is an integer number (21256434).

Almost surely, 2^42512867 is an apocalyptic number.

42512867 is a deficient number, since it is larger than the sum of its proper divisors (1).

42512867 is an equidigital number, since it uses as much as digits as its factorization.

42512867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 35.

The square root of 42512867 is about 6520.1891843719. The cubic root of 42512867 is about 349.0118166895.

The spelling of 42512867 in words is "forty-two million, five hundred twelve thousand, eight hundred sixty-seven".