140144145 has 32 divisors (see below), whose sum is σ = 230401920. Its totient is φ = 72714240.

The previous prime is 140144143. The next prime is 140144161. The reversal of 140144145 is 541441041.

It is not a de Polignac number, because 140144145 - 2¹ = 140144143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140144143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87966 + ... + 89544.

It is an arithmetic number, because the mean of its divisors is an integer number (7200060).

Almost surely, 2^140144145 is an apocalyptic number.

140144145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140144145 is a deficient number, since it is larger than the sum of its proper divisors (90257775).

140144145 is a wasteful number, since it uses less digits than its factorization.

140144145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 140144145 is about 11838.2492371127. The cubic root of 140144145 is about 519.4275566927.

Adding to 140144145 its reverse (541441041), we get a palindrome (681585186).

The spelling of 140144145 in words is "one hundred forty million, one hundred forty-four thousand, one hundred forty-five".