140421320 has 96 divisors (see below), whose sum is σ = 352832760. Its totient is φ = 49996800.

The previous prime is 140421317. The next prime is 140421341. The reversal of 140421320 is 23124041.

It can be written as a sum of positive squares in 4 ways, for example, as 99640324 + 40780996 = 9982^2 + 6386^2 .

It is a super-2 number, since 2×140421320² = 39436294221084800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 499580 + ... + 499860.

Almost surely, 2^140421320 is an apocalyptic number.

140421320 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 140421320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176416380).

140421320 is an abundant number, since it is smaller than the sum of its proper divisors (212411440).

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

140421320 is a wasteful number, since it uses less digits than its factorization.

140421320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 140421320 is about 11849.9502108659. The cubic root of 140421320 is about 519.7697698755.

Adding to 140421320 its reverse (23124041), we get a palindrome (163545361).

The spelling of 140421320 in words is "one hundred forty million, four hundred twenty-one thousand, three hundred twenty".