139140 has 36 divisors (see below), whose sum is σ = 422604. Its totient is φ = 37056.

The previous prime is 139133. The next prime is 139169. The reversal of 139140 is 41931.

It can be written as a sum of positive squares in 2 ways, for example, as 26244 + 112896 = 162^2 + 336^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207 + ... + 566.

It is an arithmetic number, because the mean of its divisors is an integer number (11739).

2¹³⁹¹⁴⁰ is an apocalyptic number.

139140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139140 is an abundant number, since it is smaller than the sum of its proper divisors (283464).

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

139140 is a wasteful number, since it uses less digits than its factorization.

139140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 139140 is about 373.0147450169. The cubic root of 139140 is about 51.8184000662.

It can be divided in two parts, 1391 and 40, that added together give a triangular number (1431 = T₅₃).

The spelling of 139140 in words is "one hundred thirty-nine thousand, one hundred forty".