42870337 has 4 divisors (see below), whose sum is σ = 42886996. Its totient is φ = 42853680.

The previous prime is 42870313. The next prime is 42870343. The reversal of 42870337 is 73307824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14737921 + 28132416 = 3839^2 + 5304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42870337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42870307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3558 + ... + 9919.

It is an arithmetic number, because the mean of its divisors is an integer number (10721749).

Almost surely, 2^42870337 is an apocalyptic number.

It is an amenable number.

42870337 is a deficient number, since it is larger than the sum of its proper divisors (16659).

42870337 is a wasteful number, since it uses less digits than its factorization.

42870337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16658.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 42870337 is about 6547.5443488380. The cubic root of 42870337 is about 349.9873111046.

The spelling of 42870337 in words is "forty-two million, eight hundred seventy thousand, three hundred thirty-seven".