139942453 has 32 divisors (see below), whose sum is σ = 175177728. Its totient is φ = 109075200.

The previous prime is 139942441. The next prime is 139942457. The reversal of 139942453 is 354249931.

139942453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 139942453 - 2⁹ = 139941941 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 (139942457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 732588 + ... + 732778.

It is an arithmetic number, because the mean of its divisors is an integer number (5474304).

Almost surely, 2^139942453 is an apocalyptic number.

It is an amenable number.

139942453 is a deficient number, since it is larger than the sum of its proper divisors (35235275).

139942453 is a wasteful number, since it uses less digits than its factorization.

139942453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

The product of its digits is 116640, while the sum is 40.

The square root of 139942453 is about 11829.7275116547. The cubic root of 139942453 is about 519.1782546114.

The spelling of 139942453 in words is "one hundred thirty-nine million, nine hundred forty-two thousand, four hundred fifty-three".