140452639 has 2 divisors, whose sum is σ = 140452640. Its totient is φ = 140452638.

The previous prime is 140452621. The next prime is 140452667. The reversal of 140452639 is 936254041.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (936254041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140452639 - 2⁹ = 140452127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140452679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70226319 + 70226320.

It is an arithmetic number, because the mean of its divisors is an integer number (70226320).

Almost surely, 2^140452639 is an apocalyptic number.

140452639 is a deficient number, since it is larger than the sum of its proper divisors (1).

140452639 is an equidigital number, since it uses as much as digits as its factorization.

140452639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 140452639 is about 11851.2716195352. The cubic root of 140452639 is about 519.8084094480.

The spelling of 140452639 in words is "one hundred forty million, four hundred fifty-two thousand, six hundred thirty-nine".