140421200420 has 24 divisors (see below), whose sum is σ = 296531928000. Its totient is φ = 55854688352.

The previous prime is 140421200419. The next prime is 140421200449. The reversal of 140421200420 is 24002124041.

It is a super-2 number, since 2×140421200420² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 140421200392 and 140421200401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19608320 + ... + 19615479.

It is an arithmetic number, because the mean of its divisors is an integer number (12355497000).

Almost surely, 2^140421200420 is an apocalyptic number.

140421200420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140421200420 is an abundant number, since it is smaller than the sum of its proper divisors (156110727580).

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

140421200420 is a wasteful number, since it uses less digits than its factorization.

140421200420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39223987 (or 39223985 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 140421200420 its reverse (24002124041), we get a palindrome (164423324461).

The spelling of 140421200420 in words is "one hundred forty billion, four hundred twenty-one million, two hundred thousand, four hundred twenty".