42016427 has 4 divisors (see below), whose sum is σ = 42058680. Its totient is φ = 41974176.

The previous prime is 42016421. The next prime is 42016433. The reversal of 42016427 is 72461024.

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

It is an interprime number because it is at equal distance from previous prime (42016421) and next prime (42016433).

It is a cyclic number.

It is not a de Polignac number, because 42016427 - 2⁶ = 42016363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42016396 and 42016405.

It is not an unprimeable number, because it can be changed into a prime (42016421) 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, 19598 + ... + 21635.

It is an arithmetic number, because the mean of its divisors is an integer number (10514670).

Almost surely, 2^42016427 is an apocalyptic number.

42016427 is a deficient number, since it is larger than the sum of its proper divisors (42253).

42016427 is a wasteful number, since it uses less digits than its factorization.

42016427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42252.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 42016427 is about 6482.0079450738. The cubic root of 42016427 is about 347.6479765894.

The spelling of 42016427 in words is "forty-two million, sixteen thousand, four hundred twenty-seven".