139026250 has 40 divisors (see below), whose sum is σ = 284308992. Its totient is φ = 50550000.

The previous prime is 139026241. The next prime is 139026253. The reversal of 139026250 is 52620931.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (139026253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8695 + ... + 18805.

Almost surely, 2^139026250 is an apocalyptic number.

139026250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139026250 is an abundant number, since it is smaller than the sum of its proper divisors (145282742).

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

139026250 is a wasteful number, since it uses less digits than its factorization.

139026250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10144 (or 10129 counting only the distinct ones).

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

The square root of 139026250 is about 11790.9393179678. The cubic root of 139026250 is about 518.0427532380.

The spelling of 139026250 in words is "one hundred thirty-nine million, twenty-six thousand, two hundred fifty".