421139142000 has 640 divisors, whose sum is σ = 1599980928000. Its totient is φ = 105591859200.

The previous prime is 421139141999. The next prime is 421139142077. The reversal of 421139142000 is 241931124.

It is a happy number.

421139142000 is a `hidden beast` number, since 42 + 113 + 91 + 420 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 142612524 + ... + 142615476.

It is an arithmetic number, because the mean of its divisors is an integer number (2499970200).

Almost surely, 2^421139142000 is an apocalyptic number.

421139142000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421139142000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (799990464000).

421139142000 is an abundant number, since it is smaller than the sum of its proper divisors (1178841786000).

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

421139142000 is a wasteful number, since it uses less digits than its factorization.

421139142000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143 (or 3121 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 421139142000 in words is "four hundred twenty-one billion, one hundred thirty-nine million, one hundred forty-two thousand".