42745342537 has 2 divisors, whose sum is σ = 42745342538. Its totient is φ = 42745342536.

The previous prime is 42745342469. The next prime is 42745342553. The reversal of 42745342537 is 73524354724.

42745342537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39669087241 + 3076255296 = 199171^2 + 55464^2 .

It is a cyclic number.

It is not a de Polignac number, because 42745342537 - 2¹⁵ = 42745309769 is a prime.

It is not a weakly prime, because it can be changed into another prime (42745342567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21372671268 + 21372671269.

It is an arithmetic number, because the mean of its divisors is an integer number (21372671269).

Almost surely, 2^42745342537 is an apocalyptic number.

It is an amenable number.

42745342537 is a deficient number, since it is larger than the sum of its proper divisors (1).

42745342537 is an equidigital number, since it uses as much as digits as its factorization.

42745342537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2822400, while the sum is 46.

The spelling of 42745342537 in words is "forty-two billion, seven hundred forty-five million, three hundred forty-two thousand, five hundred thirty-seven".