142391895 has 16 divisors (see below), whose sum is σ = 230573952. Its totient is φ = 75026720.

The previous prime is 142391861. The next prime is 142391917. The reversal of 142391895 is 598193241.

It is not a de Polignac number, because 142391895 - 2⁶ = 142391831 is a prime.

It is a congruent number.

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, 55941 + ... + 58430.

It is an arithmetic number, because the mean of its divisors is an integer number (14410872).

Almost surely, 2^142391895 is an apocalyptic number.

142391895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142391895 is a deficient number, since it is larger than the sum of its proper divisors (88182057).

142391895 is a wasteful number, since it uses less digits than its factorization.

142391895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114462.

The product of its digits is 77760, while the sum is 42.

The square root of 142391895 is about 11932.8075070371. The cubic root of 142391895 is about 522.1898466843.

The spelling of 142391895 in words is "one hundred forty-two million, three hundred ninety-one thousand, eight hundred ninety-five".