140014621 has 2 divisors, whose sum is σ = 140014622. Its totient is φ = 140014620.

The previous prime is 140014613. The next prime is 140014643. The reversal of 140014621 is 126410041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130644900 + 9369721 = 11430^2 + 3061^2 .

It is a cyclic number.

It is not a de Polignac number, because 140014621 - 2³ = 140014613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140014691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70007310 + 70007311.

It is an arithmetic number, because the mean of its divisors is an integer number (70007311).

Almost surely, 2^140014621 is an apocalyptic number.

It is an amenable number.

140014621 is a deficient number, since it is larger than the sum of its proper divisors (1).

140014621 is an equidigital number, since it uses as much as digits as its factorization.

140014621 is an evil number, because the sum of its binary digits is even.

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

The square root of 140014621 is about 11832.7774000866. Note that the first 3 decimals coincide. The cubic root of 140014621 is about 519.2674856169.

Adding to 140014621 its reverse (126410041), we get a palindrome (266424662).

The spelling of 140014621 in words is "one hundred forty million, fourteen thousand, six hundred twenty-one".