42313871 has 4 divisors (see below), whose sum is σ = 43773000. Its totient is φ = 40854744.

The previous prime is 42313861. The next prime is 42313879. The reversal of 42313871 is 17831324.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42313871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1459099 = 42313871 / (4 + 2 + 3 + 1 + 3 + 8 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42313879) 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, 729521 + ... + 729578.

It is an arithmetic number, because the mean of its divisors is an integer number (10943250).

Almost surely, 2^42313871 is an apocalyptic number.

42313871 is a deficient number, since it is larger than the sum of its proper divisors (1459129).

42313871 is a wasteful number, since it uses less digits than its factorization.

42313871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459128.

The product of its digits is 4032, while the sum is 29.

The square root of 42313871 is about 6504.9112983960. The cubic root of 42313871 is about 348.4664084590.

The spelling of 42313871 in words is "forty-two million, three hundred thirteen thousand, eight hundred seventy-one".