42998287 has 6 divisors (see below), whose sum is σ = 45676688. Its totient is φ = 40468704.

The previous prime is 42998269. The next prime is 42998297. The reversal of 42998287 is 78289924.

It is a de Polignac number, because none of the positive numbers 2^k-42998287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42998287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42998227) 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, 74103 + ... + 74680.

Almost surely, 2^42998287 is an apocalyptic number.

42998287 is a deficient number, since it is larger than the sum of its proper divisors (2678401).

42998287 is a wasteful number, since it uses less digits than its factorization.

42998287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148817 (or 148800 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 42998287 is about 6557.3079079757. The cubic root of 42998287 is about 350.3351537902.

The spelling of 42998287 in words is "forty-two million, nine hundred ninety-eight thousand, two hundred eighty-seven".