140310121 has 4 divisors (see below), whose sum is σ = 160354432. Its totient is φ = 120265812.

The previous prime is 140310113. The next prime is 140310151. The reversal of 140310121 is 121013041.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121013041 = 107 ⋅1130963.

It is a cyclic number.

It is not a de Polignac number, because 140310121 - 2³ = 140310113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140310101) 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, 10022145 + ... + 10022158.

It is an arithmetic number, because the mean of its divisors is an integer number (40088608).

Almost surely, 2^140310121 is an apocalyptic number.

It is an amenable number.

140310121 is a deficient number, since it is larger than the sum of its proper divisors (20044311).

140310121 is an equidigital number, since it uses as much as digits as its factorization.

140310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20044310.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 140310121 is about 11845.2573209703. The cubic root of 140310121 is about 519.6325325434.

Adding to 140310121 its reverse (121013041), we get a palindrome (261323162).

The spelling of 140310121 in words is "one hundred forty million, three hundred ten thousand, one hundred twenty-one".