42155015137 has 2 divisors, whose sum is σ = 42155015138. Its totient is φ = 42155015136.

The previous prime is 42155015099. The next prime is 42155015183. The reversal of 42155015137 is 73151055124.

42155015137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28422925281 + 13732089856 = 168591^2 + 117184^2 .

It is a cyclic number.

It is not a de Polignac number, because 42155015137 - 2¹⁹ = 42154490849 is a prime.

It is not a weakly prime, because it can be changed into another prime (42155010137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21077507568 + 21077507569.

It is an arithmetic number, because the mean of its divisors is an integer number (21077507569).

Almost surely, 2^42155015137 is an apocalyptic number.

It is an amenable number.

42155015137 is a deficient number, since it is larger than the sum of its proper divisors (1).

42155015137 is an equidigital number, since it uses as much as digits as its factorization.

42155015137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 42155015137 in words is "forty-two billion, one hundred fifty-five million, fifteen thousand, one hundred thirty-seven".