140508 has 24 divisors (see below), whose sum is σ = 364560. Its totient is φ = 46800.

The previous prime is 140477. The next prime is 140521. The reversal of 140508 is 805041.

It is a Smith number, since the sum of its digits (18) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 543 + ... + 758.

It is an arithmetic number, because the mean of its divisors is an integer number (15190).

2¹⁴⁰⁵⁰⁸ is an apocalyptic number.

140508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

140508 is an abundant number, since it is smaller than the sum of its proper divisors (224052).

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

140508 is a wasteful number, since it uses less digits than its factorization.

140508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 140508 is about 374.8439675385. The cubic root of 140508 is about 51.9876696603.

Adding to 140508 its reverse (805041), we get a palindrome (945549).

The spelling of 140508 in words is "one hundred forty thousand, five hundred eight".