142602400644 has 48 divisors (see below), whose sum is σ = 363317391360. Its totient is φ = 43173627040.

The previous prime is 142602400643. The next prime is 142602400651. The reversal of 142602400644 is 446004206241.

It is a super-2 number, since 2×142602400644² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (142602400643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344124 + ... + 635315.

It is an arithmetic number, because the mean of its divisors is an integer number (7569112320).

Almost surely, 2^142602400644 is an apocalyptic number.

It is an amenable number.

142602400644 is an abundant number, since it is smaller than the sum of its proper divisors (220714990716).

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

142602400644 is a wasteful number, since it uses less digits than its factorization.

142602400644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980560 (or 980558 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 142602400644 its reverse (446004206241), we get a palindrome (588606606885).

The spelling of 142602400644 in words is "one hundred forty-two billion, six hundred two million, four hundred thousand, six hundred forty-four".