139240519 has 8 divisors (see below), whose sum is σ = 153403920. Its totient is φ = 125328000.

The previous prime is 139240501. The next prime is 139240537. The reversal of 139240519 is 915042931.

It is an interprime number because it is at equal distance from previous prime (139240501) and next prime (139240537).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139240519 - 2⁷ = 139240391 is a prime.

It is a super-2 number, since 2×139240519² = 38775844262778722, 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 (139240019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61554 + ... + 63775.

It is an arithmetic number, because the mean of its divisors is an integer number (19175490).

Almost surely, 2^139240519 is an apocalyptic number.

139240519 is a deficient number, since it is larger than the sum of its proper divisors (14163401).

139240519 is a wasteful number, since it uses less digits than its factorization.

139240519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125441.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 139240519 is about 11800.0219915049. The cubic root of 139240519 is about 518.3087546258.

The spelling of 139240519 in words is "one hundred thirty-nine million, two hundred forty thousand, five hundred nineteen".