140242021421000 has 128 divisors (see below), whose sum is σ = 328785404594400. Its totient is φ = 55991059660800.

The previous prime is 140242021420993. The next prime is 140242021421023. The reversal of 140242021421000 is 124120242041.

It can be written as a sum of positive squares in 16 ways, for example, as 12837931996036 + 127404089424964 = 3583006^2 + 11287342^2 .

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, 1526431064 + ... + 1526522936.

Almost surely, 2^{140242021421000} is an apocalyptic number.

140242021421000 is a gapful number since it is divisible by the number (10) 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 140242021421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164392702297200).

140242021421000 is an abundant number, since it is smaller than the sum of its proper divisors (188543383173400).

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

140242021421000 is a wasteful number, since it uses less digits than its factorization.

140242021421000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94756 (or 94742 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 140242021421000 its reverse (124120242041), we get a palindrome (140366141663041).

The spelling of 140242021421000 in words is "one hundred forty trillion, two hundred forty-two billion, twenty-one million, four hundred twenty-one thousand".