42390516 has 96 divisors (see below), whose sum is σ = 118816768. Its totient is φ = 11508480.

The previous prime is 42390487. The next prime is 42390521. The reversal of 42390516 is 61509324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189981 + ... + 190203.

Almost surely, 2^42390516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42390516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59408384).

42390516 is an abundant number, since it is smaller than the sum of its proper divisors (76426252).

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

42390516 is a wasteful number, since it uses less digits than its factorization.

42390516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 42390516 is about 6510.7999508509. The cubic root of 42390516 is about 348.6766791302.

The spelling of 42390516 in words is "forty-two million, three hundred ninety thousand, five hundred sixteen".