42537137 has 2 divisors, whose sum is σ = 42537138. Its totient is φ = 42537136.

The previous prime is 42537107. The next prime is 42537139. The reversal of 42537137 is 73173524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29170801 + 13366336 = 5401^2 + 3656^2 .

It is a cyclic number.

It is not a de Polignac number, because 42537137 - 2²² = 38342833 is a prime.

Together with 42537139, 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 (42537139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21268568 + 21268569.

It is an arithmetic number, because the mean of its divisors is an integer number (21268569).

Almost surely, 2^42537137 is an apocalyptic number.

It is an amenable number.

42537137 is a deficient number, since it is larger than the sum of its proper divisors (1).

42537137 is an equidigital number, since it uses as much as digits as its factorization.

42537137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 32.

The square root of 42537137 is about 6522.0500611388. The cubic root of 42537137 is about 349.0782193734.

The spelling of 42537137 in words is "forty-two million, five hundred thirty-seven thousand, one hundred thirty-seven".