42038537 has 2 divisors, whose sum is σ = 42038538. Its totient is φ = 42038536.

The previous prime is 42038531. The next prime is 42038561. The reversal of 42038537 is 73583024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24641296 + 17397241 = 4964^2 + 4171^2 .

It is a cyclic number.

It is not a de Polignac number, because 42038537 - 2⁶ = 42038473 is a prime.

It is not a weakly prime, because it can be changed into another prime (42038531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21019268 + 21019269.

It is an arithmetic number, because the mean of its divisors is an integer number (21019269).

Almost surely, 2^42038537 is an apocalyptic number.

It is an amenable number.

42038537 is a deficient number, since it is larger than the sum of its proper divisors (1).

42038537 is an equidigital number, since it uses as much as digits as its factorization.

42038537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 42038537 is about 6483.7132108075. The cubic root of 42038537 is about 347.7089459882.

The spelling of 42038537 in words is "forty-two million, thirty-eight thousand, five hundred thirty-seven".