42420516 has 12 divisors (see below), whose sum is σ = 98981232. Its totient is φ = 14140168.

The previous prime is 42420509. The next prime is 42420529. The reversal of 42420516 is 61502424.

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

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, 1767510 + ... + 1767533.

It is an arithmetic number, because the mean of its divisors is an integer number (8248436).

Almost surely, 2^42420516 is an apocalyptic number.

It is an amenable number.

42420516 is an abundant number, since it is smaller than the sum of its proper divisors (56560716).

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

42420516 is a wasteful number, since it uses less digits than its factorization.

42420516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535050 (or 3535048 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 42420516 is about 6513.1034077466. The cubic root of 42420516 is about 348.7589131983.

The spelling of 42420516 in words is "forty-two million, four hundred twenty thousand, five hundred sixteen".