168972142 has 8 divisors (see below), whose sum is σ = 253899216. Its totient is φ = 84339072.

The previous prime is 168972131. The next prime is 168972143. The reversal of 168972142 is 241279861.

168972142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 168972095 and 168972104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168972143) 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, 72058 + ... + 74365.

It is an arithmetic number, because the mean of its divisors is an integer number (31737402).

Almost surely, 2^168972142 is an apocalyptic number.

168972142 is a deficient number, since it is larger than the sum of its proper divisors (84927074).

168972142 is a wasteful number, since it uses less digits than its factorization.

168972142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147002.

The product of its digits is 48384, while the sum is 40.

The square root of 168972142 is about 12998.9284943029. The cubic root of 168972142 is about 552.8471008802.

The spelling of 168972142 in words is "one hundred sixty-eight million, nine hundred seventy-two thousand, one hundred forty-two".