140244121 has 4 divisors (see below), whose sum is σ = 142621200. Its totient is φ = 137867044.

The previous prime is 140244107. The next prime is 140244131. The reversal of 140244121 is 121442041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140244121 - 2¹⁵ = 140211353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140244131) 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, 1188451 + ... + 1188568.

It is an arithmetic number, because the mean of its divisors is an integer number (35655300).

Almost surely, 2^140244121 is an apocalyptic number.

It is an amenable number.

140244121 is a deficient number, since it is larger than the sum of its proper divisors (2377079).

140244121 is an equidigital number, since it uses as much as digits as its factorization.

140244121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377078.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 140244121 is about 11842.4710681513. The cubic root of 140244121 is about 519.5510437058.

Adding to 140244121 its reverse (121442041), we get a palindrome (261686162).

It can be divided in two parts, 14024 and 4121, that added together give a triangular number (18145 = T₁₉₀).

The spelling of 140244121 in words is "one hundred forty million, two hundred forty-four thousand, one hundred twenty-one".