140322621 has 4 divisors (see below), whose sum is σ = 187096832. Its totient is φ = 93548412.

The previous prime is 140322617. The next prime is 140322649. The reversal of 140322621 is 126223041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 140322621 - 2² = 140322617 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 (140322601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23387101 + ... + 23387106.

It is an arithmetic number, because the mean of its divisors is an integer number (46774208).

Almost surely, 2^140322621 is an apocalyptic number.

It is an amenable number.

140322621 is a deficient number, since it is larger than the sum of its proper divisors (46774211).

140322621 is an equidigital number, since it uses as much as digits as its factorization.

140322621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46774210.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 140322621 is about 11845.7849465538. The cubic root of 140322621 is about 519.6479631570.

Adding to 140322621 its reverse (126223041), we get a palindrome (266545662).

It can be divided in two parts, 14032 and 2621, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 140322621 in words is "one hundred forty million, three hundred twenty-two thousand, six hundred twenty-one".