215692142 has 8 divisors (see below), whose sum is σ = 340566600. Its totient is φ = 102169944.

The previous prime is 215692117. The next prime is 215692153. The reversal of 215692142 is 241296512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 215692099 and 215692108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2838017 + ... + 2838092.

It is an arithmetic number, because the mean of its divisors is an integer number (42570825).

Almost surely, 2^215692142 is an apocalyptic number.

215692142 is a deficient number, since it is larger than the sum of its proper divisors (124874458).

215692142 is a wasteful number, since it uses less digits than its factorization.

215692142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5676130.

The product of its digits is 8640, while the sum is 32.

The square root of 215692142 is about 14686.4611802844. The cubic root of 215692142 is about 599.7148107629.

The spelling of 215692142 in words is "two hundred fifteen million, six hundred ninety-two thousand, one hundred forty-two".