42524491 has 2 divisors, whose sum is σ = 42524492. Its totient is φ = 42524490.

The previous prime is 42524483. The next prime is 42524501. The reversal of 42524491 is 19442524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42524491 - 2³ = 42524483 is a prime.

It is not a weakly prime, because it can be changed into another prime (42524441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21262245 + 21262246.

It is an arithmetic number, because the mean of its divisors is an integer number (21262246).

Almost surely, 2^42524491 is an apocalyptic number.

42524491 is a deficient number, since it is larger than the sum of its proper divisors (1).

42524491 is an equidigital number, since it uses as much as digits as its factorization.

42524491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 42524491 is about 6521.0805086274. The cubic root of 42524491 is about 349.0436230888.

The spelling of 42524491 in words is "forty-two million, five hundred twenty-four thousand, four hundred ninety-one".