142977472 has 84 divisors (see below), whose sum is σ = 320929000. Its totient is φ = 63106560.

The previous prime is 142977469. The next prime is 142977479. The reversal of 142977472 is 274779241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142977479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286279 + ... + 286777.

Almost surely, 2^142977472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142977472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160464500).

142977472 is an abundant number, since it is smaller than the sum of its proper divisors (177951528).

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

142977472 is a wasteful number, since it uses less digits than its factorization.

142977472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 549 counting only the distinct ones).

The product of its digits is 197568, while the sum is 43.

The square root of 142977472 is about 11957.3187630003. The cubic root of 142977472 is about 522.9046910911.

The spelling of 142977472 in words is "one hundred forty-two million, nine hundred seventy-seven thousand, four hundred seventy-two".