139240502 has 8 divisors (see below), whose sum is σ = 211504800. Its totient is φ = 68738904.

The previous prime is 139240501. The next prime is 139240537. The reversal of 139240502 is 205042931.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139240501) 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 3 ways as a sum of consecutive naturals, for example, 440477 + ... + 440792.

It is an arithmetic number, because the mean of its divisors is an integer number (26438100).

Almost surely, 2^139240502 is an apocalyptic number.

139240502 is a deficient number, since it is larger than the sum of its proper divisors (72264298).

139240502 is an equidigital number, since it uses as much as digits as its factorization.

139240502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881350.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 139240502 is about 11800.0212711673. The cubic root of 139240502 is about 518.3087335322.

The spelling of 139240502 in words is "one hundred thirty-nine million, two hundred forty thousand, five hundred two".