140010121 has 8 divisors (see below), whose sum is σ = 143728200. Its totient is φ = 136306560.

The previous prime is 140010119. The next prime is 140010149. The reversal of 140010121 is 121010041.

It can be written as a sum of positive squares in 4 ways, for example, as 17598025 + 122412096 = 4195^2 + 11064^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140010121 - 2¹ = 140010119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140010098 and 140010107.

It is not an unprimeable number, because it can be changed into a prime (140010161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17515 + ... + 24223.

It is an arithmetic number, because the mean of its divisors is an integer number (17966025).

Almost surely, 2^140010121 is an apocalyptic number.

It is an amenable number.

140010121 is a deficient number, since it is larger than the sum of its proper divisors (3718079).

140010121 is an equidigital number, since it uses as much as digits as its factorization.

140010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7259.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 140010121 is about 11832.5872487804. The cubic root of 140010121 is about 519.2619225581.

Adding to 140010121 its reverse (121010041), we get a palindrome (261020162).

The spelling of 140010121 in words is "one hundred forty million, ten thousand, one hundred twenty-one".