342721612440 has 48 divisors (see below), whose sum is σ = 1113845241600. Its totient is φ = 91392429888.

The previous prime is 342721612439. The next prime is 342721612463. The reversal of 342721612440 is 44216127243.

342721612440 is a `hidden beast` number, since 3 + 427 + 216 + 12 + 4 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 342721612395 and 342721612404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 476001880 + ... + 476002599.

It is an arithmetic number, because the mean of its divisors is an integer number (23205109200).

Almost surely, 2^342721612440 is an apocalyptic number.

342721612440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

342721612440 is an abundant number, since it is smaller than the sum of its proper divisors (771123629160).

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

342721612440 is a wasteful number, since it uses less digits than its factorization.

342721612440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952004496 (or 952004489 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

Adding to 342721612440 its reverse (44216127243), we get a palindrome (386937739683).

The spelling of 342721612440 in words is "three hundred forty-two billion, seven hundred twenty-one million, six hundred twelve thousand, four hundred forty".