142394172 has 12 divisors (see below), whose sum is σ = 332253096. Its totient is φ = 47464720.

The previous prime is 142394171. The next prime is 142394177. The reversal of 142394172 is 271493241.

142394172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×142394172² = 40552200439131168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142394171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5933079 + ... + 5933102.

It is an arithmetic number, because the mean of its divisors is an integer number (27687758).

Almost surely, 2^142394172 is an apocalyptic number.

142394172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142394172 is an abundant number, since it is smaller than the sum of its proper divisors (189858924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142394172 is a wasteful number, since it uses less digits than its factorization.

142394172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11866188 (or 11866186 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 142394172 is about 11932.9029158877. The cubic root of 142394172 is about 522.1926301291.

The spelling of 142394172 in words is "one hundred forty-two million, three hundred ninety-four thousand, one hundred seventy-two".