42052457 has 2 divisors, whose sum is σ = 42052458. Its totient is φ = 42052456.

The previous prime is 42052447. The next prime is 42052459. The reversal of 42052457 is 75425024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42042256 + 10201 = 6484^2 + 101^2 .

It is a cyclic number.

It is not a de Polignac number, because 42052457 - 2¹⁸ = 41790313 is a prime.

Together with 42052459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42052459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21026228 + 21026229.

It is an arithmetic number, because the mean of its divisors is an integer number (21026229).

Almost surely, 2^42052457 is an apocalyptic number.

It is an amenable number.

42052457 is a deficient number, since it is larger than the sum of its proper divisors (1).

42052457 is an equidigital number, since it uses as much as digits as its factorization.

42052457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 42052457 is about 6484.7865809138. The cubic root of 42052457 is about 347.7473200988.

The spelling of 42052457 in words is "forty-two million, fifty-two thousand, four hundred fifty-seven".