139154040 has 192 divisors, whose sum is σ = 480879360. Its totient is φ = 34836480.

The previous prime is 139154039. The next prime is 139154047. The reversal of 139154040 is 40451931.

It is a junction number, because it is equal to n+sod(n) for n = 139153995 and 139154013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139154047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 412752 + ... + 413088.

It is an arithmetic number, because the mean of its divisors is an integer number (2504580).

Almost surely, 2^139154040 is an apocalyptic number.

139154040 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 139154040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240439680).

139154040 is an abundant number, since it is smaller than the sum of its proper divisors (341725320).

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

139154040 is a wasteful number, since it uses less digits than its factorization.

139154040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 139154040 is about 11796.3570647891. The cubic root of 139154040 is about 518.2014292922.

It can be divided in two parts, 13915 and 4040, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 139154040 in words is "one hundred thirty-nine million, one hundred fifty-four thousand, forty".