139062500 has 54 divisors (see below), whose sum is σ = 307617030. Its totient is φ = 55000000.

The previous prime is 139062491. The next prime is 139062503. The reversal of 139062500 is 5260931.

It can be written as a sum of positive squares in 9 ways, for example, as 25725184 + 113337316 = 5072^2 + 10646^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 139062500.

It is not an unprimeable number, because it can be changed into a prime (139062503) 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 17 ways as a sum of consecutive naturals, for example, 1562456 + ... + 1562544.

Almost surely, 2^139062500 is an apocalyptic number.

139062500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139062500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153808515).

139062500 is an abundant number, since it is smaller than the sum of its proper divisors (168554530).

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

139062500 is an frugal number, since it uses more digits than its factorization.

139062500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 139062500 is about 11792.4764150708. The cubic root of 139062500 is about 518.0877745148.

The spelling of 139062500 in words is "one hundred thirty-nine million, sixty-two thousand, five hundred".