139240002 has 16 divisors (see below), whose sum is σ = 303796512. Its totient is φ = 42193920.

The previous prime is 139240001. The next prime is 139240009. The reversal of 139240002 is 200042931.

It is not an unprimeable number, because it can be changed into a prime (139240001) 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, 1054783 + ... + 1054914.

It is an arithmetic number, because the mean of its divisors is an integer number (18987282).

Almost surely, 2^139240002 is an apocalyptic number.

139240002 is an abundant number, since it is smaller than the sum of its proper divisors (164556510).

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

139240002 is a wasteful number, since it uses less digits than its factorization.

139240002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109713.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 139240002 is about 11800.0000847458. Note that the first 4 decimals coincide. The cubic root of 139240002 is about 518.3081131316.

Adding to 139240002 its reverse (200042931), we get a palindrome (339282933).

The spelling of 139240002 in words is "one hundred thirty-nine million, two hundred forty thousand, two".