139817424 has 40 divisors (see below), whose sum is σ = 369600352. Its totient is φ = 45521280.

The previous prime is 139817423. The next prime is 139817441. The reversal of 139817424 is 424718931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139817423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31807 + ... + 35934.

Almost surely, 2^139817424 is an apocalyptic number.

It is an amenable number.

139817424 is an abundant number, since it is smaller than the sum of its proper divisors (229782928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139817424 is a wasteful number, since it uses less digits than its factorization.

139817424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67795 (or 67789 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 139817424 is about 11824.4418050071. The cubic root of 139817424 is about 519.0235918011.

The spelling of 139817424 in words is "one hundred thirty-nine million, eight hundred seventeen thousand, four hundred twenty-four".