139254100 has 18 divisors (see below), whose sum is σ = 302181614. Its totient is φ = 55701600.

The previous prime is 139254079. The next prime is 139254127. The reversal of 139254100 is 1452931.

It can be written as a sum of positive squares in 3 ways, for example, as 44542276 + 94711824 = 6674^2 + 9732^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 696171 + ... + 696370.

Almost surely, 2^139254100 is an apocalyptic number.

139254100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139254100 is an abundant number, since it is smaller than the sum of its proper divisors (162927514).

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

139254100 is a wasteful number, since it uses less digits than its factorization.

139254100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392555 (or 1392548 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 139254100 is about 11800.5974425026. The cubic root of 139254100 is about 518.3256053778.

The spelling of 139254100 in words is "one hundred thirty-nine million, two hundred fifty-four thousand, one hundred".