140041621 has 4 divisors (see below), whose sum is σ = 140642892. Its totient is φ = 139440352.

The previous prime is 140041619. The next prime is 140041639. The reversal of 140041621 is 126140041.

140041621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 126140041 = 227 ⋅555683.

It can be written as a sum of positive squares in 2 ways, for example, as 64160100 + 75881521 = 8010^2 + 8711^2 .

It is a cyclic number.

It is not a de Polignac number, because 140041621 - 2¹ = 140041619 is a prime.

It is a super-2 number, since 2×140041621² = 39223311224615282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140041721) 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, 300286 + ... + 300751.

It is an arithmetic number, because the mean of its divisors is an integer number (35160723).

Almost surely, 2^140041621 is an apocalyptic number.

It is an amenable number.

140041621 is a deficient number, since it is larger than the sum of its proper divisors (601271).

140041621 is an equidigital number, since it uses as much as digits as its factorization.

140041621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601270.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 140041621 is about 11833.9182437602. The cubic root of 140041621 is about 519.3008614670.

Adding to 140041621 its reverse (126140041), we get a palindrome (266181662).

It can be divided in two parts, 14004 and 1621, that added together give a 6-th power (15625 = 5⁶).

The spelling of 140041621 in words is "one hundred forty million, forty-one thousand, six hundred twenty-one".