142256321564 has 36 divisors (see below), whose sum is σ = 296327969784. Its totient is φ = 59549154336.

The previous prime is 142256321563. The next prime is 142256321591. The reversal of 142256321564 is 465123652241.

It is a super-2 number, since 2×142256321564² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142256321563) 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, 8431079 + ... + 8447934.

It is an arithmetic number, because the mean of its divisors is an integer number (8231332494).

Almost surely, 2^142256321564 is an apocalyptic number.

142256321564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

142256321564 is an abundant number, since it is smaller than the sum of its proper divisors (154071648220).

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

142256321564 is a wasteful number, since it uses less digits than its factorization.

142256321564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16879074 (or 16879065 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

The spelling of 142256321564 in words is "one hundred forty-two billion, two hundred fifty-six million, three hundred twenty-one thousand, five hundred sixty-four".