42287715 has 24 divisors (see below), whose sum is σ = 73561488. Its totient is φ = 22472640.

The previous prime is 42287681. The next prime is 42287723. The reversal of 42287715 is 51778224.

It is not a de Polignac number, because 42287715 - 2¹¹ = 42285667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42287715.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12285 + ... + 15345.

It is an arithmetic number, because the mean of its divisors is an integer number (3065062).

Almost surely, 2^42287715 is an apocalyptic number.

42287715 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42287715 is a deficient number, since it is larger than the sum of its proper divisors (31273773).

42287715 is a wasteful number, since it uses less digits than its factorization.

42287715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379 (or 3376 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 42287715 is about 6502.9005066970. The cubic root of 42287715 is about 348.3945930328.

The spelling of 42287715 in words is "forty-two million, two hundred eighty-seven thousand, seven hundred fifteen".