142971924 has 12 divisors (see below), whose sum is σ = 333601184. Its totient is φ = 47657304.

The previous prime is 142971923. The next prime is 142971937. The reversal of 142971924 is 429179241.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142971923) 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, 5957152 + ... + 5957175.

Almost surely, 2^142971924 is an apocalyptic number.

It is an amenable number.

142971924 is an abundant number, since it is smaller than the sum of its proper divisors (190629260).

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

142971924 is a wasteful number, since it uses less digits than its factorization.

142971924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11914334 (or 11914332 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 142971924 is about 11957.0867689417. The cubic root of 142971924 is about 522.8979275250.

The spelling of 142971924 in words is "one hundred forty-two million, nine hundred seventy-one thousand, nine hundred twenty-four".