215156342 has 16 divisors (see below), whose sum is σ = 344025600. Its totient is φ = 100624680.

The previous prime is 215156327. The next prime is 215156371. The reversal of 215156342 is 243651512.

215156342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32834 + ... + 38837.

It is an arithmetic number, because the mean of its divisors is an integer number (21501600).

Almost surely, 2^215156342 is an apocalyptic number.

215156342 is a deficient number, since it is larger than the sum of its proper divisors (128869258).

215156342 is a wasteful number, since it uses less digits than its factorization.

215156342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71771.

The product of its digits is 7200, while the sum is 29.

The square root of 215156342 is about 14668.2085477402. The cubic root of 215156342 is about 599.2178159418.

The spelling of 215156342 in words is "two hundred fifteen million, one hundred fifty-six thousand, three hundred forty-two".