42012519 has 8 divisors (see below), whose sum is σ = 56046960. Its totient is φ = 27993216.

The previous prime is 42012511. The next prime is 42012521. The reversal of 42012519 is 91521024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42012519 - 2³ = 42012511 is a prime.

It is a super-2 number, since 2×42012519² = 3530103505450722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42012511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7519 + ... + 11855.

It is an arithmetic number, because the mean of its divisors is an integer number (7005870).

Almost surely, 2^42012519 is an apocalyptic number.

42012519 is a deficient number, since it is larger than the sum of its proper divisors (14034441).

42012519 is a wasteful number, since it uses less digits than its factorization.

42012519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7569.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 42012519 is about 6481.7064882637. The cubic root of 42012519 is about 347.6371978653.

The spelling of 42012519 in words is "forty-two million, twelve thousand, five hundred nineteen".