140172621 has 8 divisors (see below), whose sum is σ = 187084320. Its totient is φ = 93354672.

The previous prime is 140172611. The next prime is 140172653. The reversal of 140172621 is 126271041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140172621 - 2¹⁰ = 140171597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140172591 and 140172600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140172601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19870 + ... + 25983.

It is an arithmetic number, because the mean of its divisors is an integer number (23385540).

Almost surely, 2^140172621 is an apocalyptic number.

It is an amenable number.

140172621 is a deficient number, since it is larger than the sum of its proper divisors (46911699).

140172621 is a wasteful number, since it uses less digits than its factorization.

140172621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46875.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 140172621 is about 11839.4518876509. The cubic root of 140172621 is about 519.4627352759.

The spelling of 140172621 in words is "one hundred forty million, one hundred seventy-two thousand, six hundred twenty-one".