42872499 has 12 divisors (see below), whose sum is σ = 62080200. Its totient is φ = 28510944.

The previous prime is 42872497. The next prime is 42872513. The reversal of 42872499 is 99427824.

It is not a de Polignac number, because 42872499 - 2¹ = 42872497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42872491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1914 + ... + 9455.

It is an arithmetic number, because the mean of its divisors is an integer number (5173350).

Almost surely, 2^42872499 is an apocalyptic number.

42872499 is a deficient number, since it is larger than the sum of its proper divisors (19207701).

42872499 is a wasteful number, since it uses less digits than its factorization.

42872499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11794 (or 11791 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 42872499 is about 6547.7094468218. The cubic root of 42872499 is about 349.9931944255.

It can be divided in two parts, 4287 and 2499, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 42872499 in words is "forty-two million, eight hundred seventy-two thousand, four hundred ninety-nine".