139065250 has 16 divisors (see below), whose sum is σ = 260330616. Its totient is φ = 55626000.

The previous prime is 139065221. The next prime is 139065263. The reversal of 139065250 is 52560931.

139065250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9492561 + 129572689 = 3081^2 + 11383^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277881 + ... + 278380.

Almost surely, 2^139065250 is an apocalyptic number.

139065250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139065250 is a deficient number, since it is larger than the sum of its proper divisors (121265366).

139065250 is an equidigital number, since it uses as much as digits as its factorization.

139065250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556278 (or 556268 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 139065250 is about 11792.5930142611. The cubic root of 139065250 is about 518.0911896027.

The spelling of 139065250 in words is "one hundred thirty-nine million, sixty-five thousand, two hundred fifty".