142978736 has 40 divisors (see below), whose sum is σ = 284513040. Its totient is φ = 69578496.

The previous prime is 142978711. The next prime is 142978739. The reversal of 142978736 is 637879241.

It is not an unprimeable number, because it can be changed into a prime (142978739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117266 + ... + 118478.

It is an arithmetic number, because the mean of its divisors is an integer number (7112826).

Almost surely, 2^142978736 is an apocalyptic number.

142978736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

142978736 is a deficient number, since it is larger than the sum of its proper divisors (141534304).

142978736 is a wasteful number, since it uses less digits than its factorization.

142978736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413 (or 1407 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 142978736 is about 11957.3716175420. The cubic root of 142978736 is about 522.9062320089.

The spelling of 142978736 in words is "one hundred forty-two million, nine hundred seventy-eight thousand, seven hundred thirty-six".