140182621 has 2 divisors, whose sum is σ = 140182622. Its totient is φ = 140182620.

The previous prime is 140182619. The next prime is 140182633. The reversal of 140182621 is 126281041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119661721 + 20520900 = 10939^2 + 4530^2 .

It is a cyclic number.

It is not a de Polignac number, because 140182621 - 2¹ = 140182619 is a prime.

Together with 140182619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140182661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70091310 + 70091311.

It is an arithmetic number, because the mean of its divisors is an integer number (70091311).

Almost surely, 2^140182621 is an apocalyptic number.

It is an amenable number.

140182621 is a deficient number, since it is larger than the sum of its proper divisors (1).

140182621 is an equidigital number, since it uses as much as digits as its factorization.

140182621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 140182621 is about 11839.8741969668. The cubic root of 140182621 is about 519.4750879113.

The spelling of 140182621 in words is "one hundred forty million, one hundred eighty-two thousand, six hundred twenty-one".