142778774720 has 56 divisors (see below), whose sum is σ = 341700612000. Its totient is φ = 56824492032.

The previous prime is 142778774659. The next prime is 142778774759. The reversal of 142778774720 is 27477877241.

It is a super-2 number, since 2×142778774720² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057385 + ... + 1184744.

Almost surely, 2^142778774720 is an apocalyptic number.

142778774720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142778774720 is an abundant number, since it is smaller than the sum of its proper divisors (198921837280).

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

142778774720 is a wasteful number, since it uses less digits than its factorization.

142778774720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242345 (or 2242335 counting only the distinct ones).

The product of its (nonzero) digits is 8605184, while the sum is 56.

The spelling of 142778774720 in words is "one hundred forty-two billion, seven hundred seventy-eight million, seven hundred seventy-four thousand, seven hundred twenty".