139026052 has 48 divisors (see below), whose sum is σ = 273696192. Its totient is φ = 61246080.

The previous prime is 139025989. The next prime is 139026071. The reversal of 139026052 is 250620931.

It is a self number, because there is not a number n which added to its sum of digits gives 139026052.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 372538 + ... + 372910.

It is an arithmetic number, because the mean of its divisors is an integer number (5702004).

Almost surely, 2^139026052 is an apocalyptic number.

It is an amenable number.

139026052 is a deficient number, since it is larger than the sum of its proper divisors (134670140).

139026052 is a wasteful number, since it uses less digits than its factorization.

139026052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 139026052 is about 11790.9309216872. The cubic root of 139026052 is about 518.0425073071.

Adding to 139026052 its reverse (250620931), we get a palindrome (389646983).

The spelling of 139026052 in words is "one hundred thirty-nine million, twenty-six thousand, fifty-two".