140906 has 8 divisors (see below), whose sum is σ = 216000. Its totient is φ = 68908.

The previous prime is 140897. The next prime is 140909. The reversal of 140906 is 609041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (140909) by changing a digit.

140906 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656 + ... + 843.

It is an arithmetic number, because the mean of its divisors is an integer number (27000).

2¹⁴⁰⁹⁰⁶ is an apocalyptic number.

140906 is a deficient number, since it is larger than the sum of its proper divisors (75094).

140906 is a wasteful number, since it uses less digits than its factorization.

140906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 140906 is about 375.3744796866. The cubic root of 140906 is about 52.0367097786.

Adding to 140906 its reverse (609041), we get a palindrome (749947).

The spelling of 140906 in words is "one hundred forty thousand, nine hundred six".