139150940 has 48 divisors (see below), whose sum is σ = 304711680. Its totient is φ = 53317440.

The previous prime is 139150939. The next prime is 139151011. The reversal of 139150940 is 49051931.

It is a junction number, because it is equal to n+sod(n) for n = 139150897 and 139150906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62771 + ... + 64949.

It is an arithmetic number, because the mean of its divisors is an integer number (6348160).

Almost surely, 2^139150940 is an apocalyptic number.

139150940 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 139150940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152355840).

139150940 is an abundant number, since it is smaller than the sum of its proper divisors (165560740).

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

139150940 is a wasteful number, since it uses less digits than its factorization.

139150940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322 (or 2320 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 139150940 is about 11796.2256675599. The cubic root of 139150940 is about 518.1975811913.

Subtracting from 139150940 its reverse (49051931), we obtain a palindrome (90099009).

The spelling of 139150940 in words is "one hundred thirty-nine million, one hundred fifty thousand, nine hundred forty".