146720121 has 8 divisors (see below), whose sum is σ = 195750720. Its totient is φ = 97751472.

The previous prime is 146720107. The next prime is 146720173. The reversal of 146720121 is 121027641.

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

It is not a de Polignac number, because 146720121 - 2⁹ = 146719609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 146720091 and 146720100.

It is not an unprimeable number, because it can be changed into a prime (146720191) 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, 9645 + ... + 19658.

It is an arithmetic number, because the mean of its divisors is an integer number (24468840).

Almost surely, 2^146720121 is an apocalyptic number.

It is an amenable number.

146720121 is a deficient number, since it is larger than the sum of its proper divisors (49030599).

146720121 is a wasteful number, since it uses less digits than its factorization.

146720121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30975.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 146720121 is about 12112.8081384954. The cubic root of 146720121 is about 527.4280530492.

Adding to 146720121 its reverse (121027641), we get a palindrome (267747762).

The spelling of 146720121 in words is "one hundred forty-six million, seven hundred twenty thousand, one hundred twenty-one".