42146537 has 2 divisors, whose sum is σ = 42146538. Its totient is φ = 42146536.

The previous prime is 42146527. The next prime is 42146549. The reversal of 42146537 is 73564124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42133081 + 13456 = 6491^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 42146537 - 2⁴ = 42146521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42146527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21073268 + 21073269.

It is an arithmetic number, because the mean of its divisors is an integer number (21073269).

Almost surely, 2^42146537 is an apocalyptic number.

It is an amenable number.

42146537 is a deficient number, since it is larger than the sum of its proper divisors (1).

42146537 is an equidigital number, since it uses as much as digits as its factorization.

42146537 is an evil number, because the sum of its binary digits is even.

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

The square root of 42146537 is about 6492.0364293494. The cubic root of 42146537 is about 348.0064543877.

The spelling of 42146537 in words is "forty-two million, one hundred forty-six thousand, five hundred thirty-seven".