142421561213420 has 48 divisors (see below), whose sum is σ = 299261020054080. Its totient is φ = 56935153207296.

The previous prime is 142421561213413. The next prime is 142421561213423. The reversal of 142421561213420 is 24312165124241.

It is not an unprimeable number, because it can be changed into a prime (142421561213423) 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, 776941136 + ... + 777124424.

It is an arithmetic number, because the mean of its divisors is an integer number (6234604584460).

Almost surely, 2^{142421561213420} is an apocalyptic number.

142421561213420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142421561213420 is an abundant number, since it is smaller than the sum of its proper divisors (156839458840660).

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

142421561213420 is a wasteful number, since it uses less digits than its factorization.

142421561213420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205914 (or 205912 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 142421561213420 in words is "one hundred forty-two trillion, four hundred twenty-one billion, five hundred sixty-one million, two hundred thirteen thousand, four hundred twenty".