140337421 has 16 divisors (see below), whose sum is σ = 170784000. Its totient is φ = 115052784.

The previous prime is 140337419. The next prime is 140337443. The reversal of 140337421 is 124733041.

It is not a de Polignac number, because 140337421 - 2¹ = 140337419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140337451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1006 + ... + 16783.

It is an arithmetic number, because the mean of its divisors is an integer number (10674000).

Almost surely, 2^140337421 is an apocalyptic number.

It is an amenable number.

140337421 is a deficient number, since it is larger than the sum of its proper divisors (30446579).

140337421 is an equidigital number, since it uses as much as digits as its factorization.

140337421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17833 (or 17819 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 140337421 is about 11846.4096248610. The cubic root of 140337421 is about 519.6662318187. Note that the first 3 decimals are identical.

It can be divided in two parts, 140 and 337421, that added together give a square (337561 = 581²).

The spelling of 140337421 in words is "one hundred forty million, three hundred thirty-seven thousand, four hundred twenty-one".