217142060 has 48 divisors (see below), whose sum is σ = 468550656. Its totient is φ = 84494592.

The previous prime is 217142039. The next prime is 217142087. The reversal of 217142060 is 60241712.

217142060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133814 + ... + 135426.

It is an arithmetic number, because the mean of its divisors is an integer number (9761472).

Almost surely, 2^217142060 is an apocalyptic number.

217142060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

217142060 is an abundant number, since it is smaller than the sum of its proper divisors (251408596).

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

217142060 is a wasteful number, since it uses less digits than its factorization.

217142060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802 (or 1800 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 217142060 is about 14735.7409043455. The cubic root of 217142060 is about 601.0556047050.

Adding to 217142060 its reverse (60241712), we get a palindrome (277383772).

The spelling of 217142060 in words is "two hundred seventeen million, one hundred forty-two thousand, sixty".