140446668121 has 4 divisors (see below), whose sum is σ = 148708236852. Its totient is φ = 132185099392.

The previous prime is 140446668101. The next prime is 140446668143. The reversal of 140446668121 is 121866644041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121866644041 = 3943 ⋅30907087.

It can be written as a sum of positive squares in 2 ways, for example, as 92820152896 + 47626515225 = 304664^2 + 218235^2 .

It is a cyclic number.

It is not a de Polignac number, because 140446668121 - 2⁷ = 140446667993 is a prime.

It is a super-3 number, since 3×140446668121³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140446668101) 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, 4130784340 + ... + 4130784373.

It is an arithmetic number, because the mean of its divisors is an integer number (37177059213).

Almost surely, 2^140446668121 is an apocalyptic number.

It is an amenable number.

140446668121 is a deficient number, since it is larger than the sum of its proper divisors (8261568731).

140446668121 is an equidigital number, since it uses as much as digits as its factorization.

140446668121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8261568730.

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 140446668121 in words is "one hundred forty billion, four hundred forty-six million, six hundred sixty-eight thousand, one hundred twenty-one".