142421561151402 has 64 divisors (see below), whose sum is σ = 312042748792320. Its totient is φ = 43066927780800.

The previous prime is 142421561151361. The next prime is 142421561151421. The reversal of 142421561151402 is 204151165124241.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11633077 + ... + 20498087.

It is an arithmetic number, because the mean of its divisors is an integer number (4875667949880).

Almost surely, 2^{142421561151402} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142421561151402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156021374396160).

142421561151402 is an abundant number, since it is smaller than the sum of its proper divisors (169621187640918).

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

142421561151402 is a wasteful number, since it uses less digits than its factorization.

142421561151402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8868579.

The product of its (nonzero) digits is 76800, while the sum is 39.

The spelling of 142421561151402 in words is "one hundred forty-two trillion, four hundred twenty-one billion, five hundred sixty-one million, one hundred fifty-one thousand, four hundred two".