42490516 has 6 divisors (see below), whose sum is σ = 74358410. Its totient is φ = 21245256.

The previous prime is 42490507. The next prime is 42490523. The reversal of 42490516 is 61509424.

It can be written as a sum of positive squares in only one way, i.e., 26522500 + 15968016 = 5150^2 + 3996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5311311 + ... + 5311318.

Almost surely, 2^42490516 is an apocalyptic number.

It is an amenable number.

42490516 is a deficient number, since it is larger than the sum of its proper divisors (31867894).

42490516 is a wasteful number, since it uses less digits than its factorization.

42490516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10622633 (or 10622631 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 42490516 is about 6518.4749750229. The cubic root of 42490516 is about 348.9506420292.

The spelling of 42490516 in words is "forty-two million, four hundred ninety thousand, five hundred sixteen".