139881140 has 48 divisors (see below), whose sum is σ = 340338432. Its totient is φ = 47298816.

The previous prime is 139881109. The next prime is 139881143. The reversal of 139881140 is 41188931.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 139881140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139881143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3377 + ... + 17063.

It is an arithmetic number, because the mean of its divisors is an integer number (7090384).

Almost surely, 2^139881140 is an apocalyptic number.

139881140 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 139881140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170169216).

139881140 is an abundant number, since it is smaller than the sum of its proper divisors (200457292).

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

139881140 is a wasteful number, since it uses less digits than its factorization.

139881140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13776 (or 13774 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 139881140 is about 11827.1357479315. The cubic root of 139881140 is about 519.1024209962.

The spelling of 139881140 in words is "one hundred thirty-nine million, eight hundred eighty-one thousand, one hundred forty".