42073137 has 6 divisors (see below), whose sum is σ = 60772322. Its totient is φ = 28048752.

The previous prime is 42073133. The next prime is 42073153. The reversal of 42073137 is 73137024.

It can be written as a sum of positive squares in only one way, i.e., 27625536 + 14447601 = 5256^2 + 3801^2 .

It is not a de Polignac number, because 42073137 - 2² = 42073133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42073137.

It is not an unprimeable number, because it can be changed into a prime (42073133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2337388 + ... + 2337405.

Almost surely, 2^42073137 is an apocalyptic number.

It is an amenable number.

42073137 is a deficient number, since it is larger than the sum of its proper divisors (18699185).

42073137 is a wasteful number, since it uses less digits than its factorization.

42073137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4674799 (or 4674796 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 42073137 is about 6486.3808861337. The cubic root of 42073137 is about 347.8043142800.

The spelling of 42073137 in words is "forty-two million, seventy-three thousand, one hundred thirty-seven".