140210121 has 8 divisors (see below), whose sum is σ = 187005280. Its totient is φ = 93444192.

The previous prime is 140210107. The next prime is 140210129. The reversal of 140210121 is 121012041.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-140210121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140210097 and 140210106.

It is not an unprimeable number, because it can be changed into a prime (140210129) 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, 9246 + ... + 19128.

It is an arithmetic number, because the mean of its divisors is an integer number (23375660).

Almost surely, 2^140210121 is an apocalyptic number.

It is an amenable number.

140210121 is a deficient number, since it is larger than the sum of its proper divisors (46795159).

140210121 is an equidigital number, since it uses as much as digits as its factorization.

140210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14615.

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

The square root of 140210121 is about 11841.0354699241. The cubic root of 140210121 is about 519.5090546298.

Adding to 140210121 its reverse (121012041), we get a palindrome (261222162).

The spelling of 140210121 in words is "one hundred forty million, two hundred ten thousand, one hundred twenty-one".