42116519 has 4 divisors (see below), whose sum is σ = 43947696. Its totient is φ = 40285344.

The previous prime is 42116513. The next prime is 42116533. The reversal of 42116519 is 91561124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42116519 is a prime.

It is a super-2 number, since 2×42116519² = 3547602345354722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42116491 and 42116500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42116513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915554 + ... + 915599.

It is an arithmetic number, because the mean of its divisors is an integer number (10986924).

Almost surely, 2^42116519 is an apocalyptic number.

42116519 is a deficient number, since it is larger than the sum of its proper divisors (1831177).

42116519 is a wasteful number, since it uses less digits than its factorization.

42116519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831176.

The product of its digits is 2160, while the sum is 29.

The square root of 42116519 is about 6489.7241081574. The cubic root of 42116519 is about 347.9238146300.

The spelling of 42116519 in words is "forty-two million, one hundred sixteen thousand, five hundred nineteen".