42287499 has 6 divisors (see below), whose sum is σ = 61081956. Its totient is φ = 28191660.

The previous prime is 42287489. The next prime is 42287537. The reversal of 42287499 is 99478224.

It is not a de Polignac number, because 42287499 - 2²¹ = 40190347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42287419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2349297 + ... + 2349314.

It is an arithmetic number, because the mean of its divisors is an integer number (10180326).

Almost surely, 2^42287499 is an apocalyptic number.

42287499 is a deficient number, since it is larger than the sum of its proper divisors (18794457).

42287499 is a wasteful number, since it uses less digits than its factorization.

42287499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698617 (or 4698614 counting only the distinct ones).

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

The square root of 42287499 is about 6502.8838987022. The cubic root of 42287499 is about 348.3939998475.

The spelling of 42287499 in words is "forty-two million, two hundred eighty-seven thousand, four hundred ninety-nine".