216875142 has 48 divisors (see below), whose sum is σ = 534912768. Its totient is φ = 62861040.

The previous prime is 216875129. The next prime is 216875143. The reversal of 216875142 is 241578612.

It is a junction number, because it is equal to n+sod(n) for n = 216875097 and 216875106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216875143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19258 + ... + 28365.

It is an arithmetic number, because the mean of its divisors is an integer number (11144016).

Almost surely, 2^216875142 is an apocalyptic number.

216875142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216875142 is an abundant number, since it is smaller than the sum of its proper divisors (318037626).

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

216875142 is a wasteful number, since it uses less digits than its factorization.

216875142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47665 (or 47662 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 216875142 is about 14726.6812962052. The cubic root of 216875142 is about 600.8092247681.

The spelling of 216875142 in words is "two hundred sixteen million, eight hundred seventy-five thousand, one hundred forty-two".