216142475 has 12 divisors (see below), whose sum is σ = 268331784. Its totient is φ = 172710720.

The previous prime is 216142453. The next prime is 216142489. The reversal of 216142475 is 574241612.

It is not a de Polignac number, because 216142475 - 2¹⁴ = 216126091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18812 + ... + 28038.

It is an arithmetic number, because the mean of its divisors is an integer number (22360982).

Almost surely, 2^216142475 is an apocalyptic number.

216142475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216142475 is a deficient number, since it is larger than the sum of its proper divisors (52189309).

216142475 is an equidigital number, since it uses as much as digits as its factorization.

216142475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10174 (or 10169 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 216142475 is about 14701.7847556003. The cubic root of 216142475 is about 600.1318923015.

The spelling of 216142475 in words is "two hundred sixteen million, one hundred forty-two thousand, four hundred seventy-five".