42399516 has 12 divisors (see below), whose sum is σ = 98932232. Its totient is φ = 14133168.

The previous prime is 42399503. The next prime is 42399527. The reversal of 42399516 is 61599324.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766635 + ... + 1766658.

Almost surely, 2^42399516 is an apocalyptic number.

It is an amenable number.

42399516 is an abundant number, since it is smaller than the sum of its proper divisors (56532716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42399516 is a wasteful number, since it uses less digits than its factorization.

42399516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533300 (or 3533298 counting only the distinct ones).

The product of its digits is 58320, while the sum is 39.

The square root of 42399516 is about 6511.4910734793. The cubic root of 42399516 is about 348.7013534233.

The spelling of 42399516 in words is "forty-two million, three hundred ninety-nine thousand, five hundred sixteen".