139545 has 24 divisors (see below), whose sum is σ = 277056. Its totient is φ = 63648.

The previous prime is 139537. The next prime is 139547. The reversal of 139545 is 545931.

It is not a de Polignac number, because 139545 - 2³ = 139537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94 + ... + 536.

It is an arithmetic number, because the mean of its divisors is an integer number (11544).

2¹³⁹⁵⁴⁵ is an apocalyptic number.

139545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139545 is a deficient number, since it is larger than the sum of its proper divisors (137511).

139545 is a wasteful number, since it uses less digits than its factorization.

139545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 458 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 139545 is about 373.5572245319. The cubic root of 139545 is about 51.8686279491.

The spelling of 139545 in words is "one hundred thirty-nine thousand, five hundred forty-five".