42023957 has 2 divisors, whose sum is σ = 42023958. Its totient is φ = 42023956.

The previous prime is 42023951. The next prime is 42023959. The reversal of 42023957 is 75932024.

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., 41075281 + 948676 = 6409^2 + 974^2 .

It is a cyclic number.

It is not a de Polignac number, because 42023957 - 2¹⁰ = 42022933 is a prime.

Together with 42023959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42023951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21011978 + 21011979.

It is an arithmetic number, because the mean of its divisors is an integer number (21011979).

Almost surely, 2^42023957 is an apocalyptic number.

It is an amenable number.

42023957 is a deficient number, since it is larger than the sum of its proper divisors (1).

42023957 is an equidigital number, since it uses as much as digits as its factorization.

42023957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 42023957 is about 6482.5887575875. The cubic root of 42023957 is about 347.6687433314.

The spelling of 42023957 in words is "forty-two million, twenty-three thousand, nine hundred fifty-seven".