139529040 has 240 divisors, whose sum is σ = 520050048. Its totient is φ = 30311424.

The previous prime is 139529009. The next prime is 139529051. The reversal of 139529040 is 40925931.

139529040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a junction number, because it is equal to n+sod(n) for n = 139528992 and 139529010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 888642 + ... + 888798.

Almost surely, 2^139529040 is an apocalyptic number.

139529040 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 139529040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260025024).

139529040 is an abundant number, since it is smaller than the sum of its proper divisors (380521008).

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

139529040 is a wasteful number, since it uses less digits than its factorization.

139529040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 139529040 is about 11812.2411082741. The cubic root of 139529040 is about 518.6665043920. Note that the first 3 decimals are identical.

The spelling of 139529040 in words is "one hundred thirty-nine million, five hundred twenty-nine thousand, forty".