42855313 has 4 divisors (see below), whose sum is σ = 43271488. Its totient is φ = 42439140.

The previous prime is 42855311. The next prime is 42855331. The reversal of 42855313 is 31355824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42855313 - 2¹ = 42855311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42855311) 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, 207933 + ... + 208138.

It is an arithmetic number, because the mean of its divisors is an integer number (10817872).

Almost surely, 2^42855313 is an apocalyptic number.

It is an amenable number.

42855313 is a deficient number, since it is larger than the sum of its proper divisors (416175).

42855313 is a wasteful number, since it uses less digits than its factorization.

42855313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416174.

The product of its digits is 14400, while the sum is 31.

The square root of 42855313 is about 6546.3969479401. The cubic root of 42855313 is about 349.9464217306.

The spelling of 42855313 in words is "forty-two million, eight hundred fifty-five thousand, three hundred thirteen".