42507571 has 2 divisors, whose sum is σ = 42507572. Its totient is φ = 42507570.

The previous prime is 42507559. The next prime is 42507583. The reversal of 42507571 is 17570524.

It is a balanced prime because it is at equal distance from previous prime (42507559) and next prime (42507583).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42507571 is a prime.

It is not a weakly prime, because it can be changed into another prime (42507511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21253785 + 21253786.

It is an arithmetic number, because the mean of its divisors is an integer number (21253786).

Almost surely, 2^42507571 is an apocalyptic number.

42507571 is a deficient number, since it is larger than the sum of its proper divisors (1).

42507571 is an equidigital number, since it uses as much as digits as its factorization.

42507571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 42507571 is about 6519.7830485377. The cubic root of 42507571 is about 348.9973234826.

The spelling of 42507571 in words is "forty-two million, five hundred seven thousand, five hundred seventy-one".