140102121 has 4 divisors (see below), whose sum is σ = 186802832. Its totient is φ = 93401412.

The previous prime is 140102119. The next prime is 140102141. The reversal of 140102121 is 121201041.

It is a happy number.

140102121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 140102121 - 2¹ = 140102119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140102097 and 140102106.

It is not an unprimeable number, because it can be changed into a prime (140102141) 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, 23350351 + ... + 23350356.

It is an arithmetic number, because the mean of its divisors is an integer number (46700708).

Almost surely, 2^140102121 is an apocalyptic number.

It is an amenable number.

140102121 is a deficient number, since it is larger than the sum of its proper divisors (46700711).

140102121 is an equidigital number, since it uses as much as digits as its factorization.

140102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46700710.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 140102121 is about 11836.4741794168. The cubic root of 140102121 is about 519.3756325212.

Adding to 140102121 its reverse (121201041), we get a palindrome (261303162).

The spelling of 140102121 in words is "one hundred forty million, one hundred two thousand, one hundred twenty-one".