142922215 has 4 divisors (see below), whose sum is σ = 171506664. Its totient is φ = 114337768.

The previous prime is 142922203. The next prime is 142922251. The reversal of 142922215 is 512229241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512229241 = 6551 ⋅78191.

It is a cyclic number.

It is not a de Polignac number, because 142922215 - 2²¹ = 140825063 is a prime.

It is a Duffinian number.

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 in 3 ways as a sum of consecutive naturals, for example, 14292217 + ... + 14292226.

It is an arithmetic number, because the mean of its divisors is an integer number (42876666).

Almost surely, 2^142922215 is an apocalyptic number.

142922215 is a deficient number, since it is larger than the sum of its proper divisors (28584449).

142922215 is an equidigital number, since it uses as much as digits as its factorization.

142922215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28584448.

The product of its digits is 2880, while the sum is 28.

The square root of 142922215 is about 11955.0079464633. The cubic root of 142922215 is about 522.8373194808.

The spelling of 142922215 in words is "one hundred forty-two million, nine hundred twenty-two thousand, two hundred fifteen".