142440306656 has 96 divisors (see below), whose sum is σ = 300566972160. Its totient is φ = 66213697536.

The previous prime is 142440306583. The next prime is 142440306691. The reversal of 142440306656 is 656603044241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14803415 + ... + 14813033.

It is an arithmetic number, because the mean of its divisors is an integer number (3130905960).

Almost surely, 2^142440306656 is an apocalyptic number.

142440306656 is a gapful number since it is divisible by the number (16) 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 142440306656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150283486080).

142440306656 is an abundant number, since it is smaller than the sum of its proper divisors (158126665504).

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

142440306656 is a wasteful number, since it uses less digits than its factorization.

142440306656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9976 (or 9968 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 142440306656 in words is "one hundred forty-two billion, four hundred forty million, three hundred six thousand, six hundred fifty-six".