139530100 has 18 divisors (see below), whose sum is σ = 302780534. Its totient is φ = 55812000.

The previous prime is 139530089. The next prime is 139530109. The reversal of 139530100 is 1035931.

It can be written as a sum of positive squares in 3 ways, for example, as 1373584 + 138156516 = 1172^2 + 11754^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139530109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 697551 + ... + 697750.

Almost surely, 2^139530100 is an apocalyptic number.

139530100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139530100 is an abundant number, since it is smaller than the sum of its proper divisors (163250434).

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

139530100 is a wasteful number, since it uses less digits than its factorization.

139530100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395315 (or 1395308 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 139530100 is about 11812.2859768971. The cubic root of 139530100 is about 518.6678178225.

The spelling of 139530100 in words is "one hundred thirty-nine million, five hundred thirty thousand, one hundred".