142011972 has 72 divisors (see below), whose sum is σ = 369969600. Its totient is φ = 45904320.

The previous prime is 142011941. The next prime is 142011979. The reversal of 142011972 is 279110241.

142011972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×142011972³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (142011979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307822 + ... + 308282.

Almost surely, 2^142011972 is an apocalyptic number.

142011972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142011972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184984800).

142011972 is an abundant number, since it is smaller than the sum of its proper divisors (227957628).

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

142011972 is a wasteful number, since it uses less digits than its factorization.

142011972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 142011972 is about 11916.8776111866. The cubic root of 142011972 is about 521.7250059908.

The spelling of 142011972 in words is "one hundred forty-two million, eleven thousand, nine hundred seventy-two".