139040000 has 180 divisors, whose sum is σ = 383127360. Its totient is φ = 49920000.

The previous prime is 139039987. The next prime is 139040029. The reversal of 139040000 is 40931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1759961 + ... + 1760039.

Almost surely, 2^139040000 is an apocalyptic number.

139040000 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 139040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191563680).

139040000 is an abundant number, since it is smaller than the sum of its proper divisors (244087360).

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

139040000 is an frugal number, since it uses more digits than its factorization.

139040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 139040000 is about 11791.5223783869. The cubic root of 139040000 is about 518.0598311951.

Adding to 139040000 its reverse (40931), we get a palindrome (139080931).

The spelling of 139040000 in words is "one hundred thirty-nine million, forty thousand".