139963242 has 8 divisors (see below), whose sum is σ = 279926496. Its totient is φ = 46654412.

The previous prime is 139963183. The next prime is 139963247. The reversal of 139963242 is 242369931.

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

139963242 is an admirable number.

It is a super-2 number, since 2×139963242² = 39179418222301128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139963242.

It is not an unprimeable number, because it can be changed into a prime (139963247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11663598 + ... + 11663609.

It is an arithmetic number, because the mean of its divisors is an integer number (34990812).

Almost surely, 2^139963242 is an apocalyptic number.

139963242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

139963242 is a wasteful number, since it uses less digits than its factorization.

139963242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23327212.

The product of its digits is 69984, while the sum is 39.

The square root of 139963242 is about 11830.6061552230. The cubic root of 139963242 is about 519.2039619934.

The spelling of 139963242 in words is "one hundred thirty-nine million, nine hundred sixty-three thousand, two hundred forty-two".