140044251 has 4 divisors (see below), whose sum is σ = 186725672. Its totient is φ = 93362832.

The previous prime is 140044241. The next prime is 140044301. The reversal of 140044251 is 152440041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 140044251 - 2⁶ = 140044187 is a prime.

It is a super-2 number, since 2×140044251² = 39224784476302002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140044241) 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, 23340706 + ... + 23340711.

It is an arithmetic number, because the mean of its divisors is an integer number (46681418).

Almost surely, 2^140044251 is an apocalyptic number.

140044251 is a deficient number, since it is larger than the sum of its proper divisors (46681421).

140044251 is an equidigital number, since it uses as much as digits as its factorization.

140044251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46681420.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 140044251 is about 11834.0293645064. The cubic root of 140044251 is about 519.3041122927.

Adding to 140044251 its reverse (152440041), we get a palindrome (292484292).

The spelling of 140044251 in words is "one hundred forty million, forty-four thousand, two hundred fifty-one".