342121255620 has 48 divisors (see below), whose sum is σ = 959246514240. Its totient is φ = 91107858816.

The previous prime is 342121255613. The next prime is 342121255687. The reversal of 342121255620 is 26552121243.

It is a happy 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, 3845530 + ... + 3933489.

It is an arithmetic number, because the mean of its divisors is an integer number (19984302380).

Almost surely, 2^342121255620 is an apocalyptic number.

342121255620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

342121255620 is an abundant number, since it is smaller than the sum of its proper divisors (617125258620).

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

342121255620 is a wasteful number, since it uses less digits than its factorization.

342121255620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7779764 (or 7779762 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 342121255620 its reverse (26552121243), we get a palindrome (368673376863).

The spelling of 342121255620 in words is "three hundred forty-two billion, one hundred twenty-one million, two hundred fifty-five thousand, six hundred twenty".