139340 has 12 divisors (see below), whose sum is σ = 292656. Its totient is φ = 55728.

The previous prime is 139339. The next prime is 139343. The reversal of 139340 is 43931.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 6967 = 139340 / (1 + 3 + 9 + 3 + 4 + 0).

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (139343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3464 + ... + 3503.

It is an arithmetic number, because the mean of its divisors is an integer number (24388).

2¹³⁹³⁴⁰ is an apocalyptic number.

139340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139340 is an abundant number, since it is smaller than the sum of its proper divisors (153316).

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

139340 is a wasteful number, since it uses less digits than its factorization.

139340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6976 (or 6974 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 139340 is about 373.2827346664. The cubic root of 139340 is about 51.8432161229.

The spelling of 139340 in words is "one hundred thirty-nine thousand, three hundred forty".