142178772 has 48 divisors (see below), whose sum is σ = 344153600. Its totient is φ = 45636480.

The previous prime is 142178759. The next prime is 142178783. The reversal of 142178772 is 277871241.

It is a self number, because there is not a number n which added to its sum of digits gives 142178772.

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, 84354 + ... + 86022.

Almost surely, 2^142178772 is an apocalyptic number.

142178772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142178772 is an abundant number, since it is smaller than the sum of its proper divisors (201974828).

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

142178772 is a wasteful number, since it uses less digits than its factorization.

142178772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936 (or 1934 counting only the distinct ones).

The product of its digits is 43904, while the sum is 39.

The square root of 142178772 is about 11923.8740348932. The cubic root of 142178772 is about 521.9291899076.

The spelling of 142178772 in words is "one hundred forty-two million, one hundred seventy-eight thousand, seven hundred seventy-two".