140144506 has 8 divisors (see below), whose sum is σ = 214689600. Its totient is φ = 68581308.

The previous prime is 140144479. The next prime is 140144507. The reversal of 140144506 is 605441041.

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

It is not an unprimeable number, because it can be changed into a prime (140144507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745356 + ... + 745543.

It is an arithmetic number, because the mean of its divisors is an integer number (26836200).

Almost surely, 2^140144506 is an apocalyptic number.

140144506 is a deficient number, since it is larger than the sum of its proper divisors (74545094).

140144506 is a wasteful number, since it uses less digits than its factorization.

140144506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490948.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 140144506 is about 11838.2644842899. The cubic root of 140144506 is about 519.4280026934.

Adding to 140144506 its reverse (605441041), we get a palindrome (745585547).

The spelling of 140144506 in words is "one hundred forty million, one hundred forty-four thousand, five hundred six".