215352142 has 4 divisors (see below), whose sum is σ = 323028216. Its totient is φ = 107676070.

The previous prime is 215352139. The next prime is 215352161. The reversal of 215352142 is 241253512.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53838034 + ... + 53838037.

It is an arithmetic number, because the mean of its divisors is an integer number (80757054).

Almost surely, 2^215352142 is an apocalyptic number.

215352142 is a deficient number, since it is larger than the sum of its proper divisors (107676074).

215352142 is a wasteful number, since it uses less digits than its factorization.

215352142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107676073.

The product of its digits is 2400, while the sum is 25.

The square root of 215352142 is about 14674.8813283106. The cubic root of 215352142 is about 599.3995307431.

The spelling of 215352142 in words is "two hundred fifteen million, three hundred fifty-two thousand, one hundred forty-two".