140801621 has 8 divisors (see below), whose sum is σ = 143925120. Its totient is φ = 137711808.

The previous prime is 140801587. The next prime is 140801623. The reversal of 140801621 is 126108041.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140801621 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 (140801623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125 + ... + 16781.

It is an arithmetic number, because the mean of its divisors is an integer number (17990640).

Almost surely, 2^140801621 is an apocalyptic number.

It is an amenable number.

140801621 is a deficient number, since it is larger than the sum of its proper divisors (3123499).

140801621 is a wasteful number, since it uses less digits than its factorization.

140801621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16843.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 140801621 is about 11865.9858840300. The cubic root of 140801621 is about 520.2385751900.

Adding to 140801621 its reverse (126108041), we get a palindrome (266909662).

The spelling of 140801621 in words is "one hundred forty million, eight hundred one thousand, six hundred twenty-one".