121242001 has 4 divisors (see below), whose sum is σ = 122702832. Its totient is φ = 119781172.

The previous prime is 121241987. The next prime is 121242041. The reversal of 121242001 is 100242121.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 121242001 - 2⁵ = 121241969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121242041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730291 + ... + 730456.

It is an arithmetic number, because the mean of its divisors is an integer number (30675708).

Almost surely, 2^121242001 is an apocalyptic number.

It is an amenable number.

121242001 is a deficient number, since it is larger than the sum of its proper divisors (1460831).

121242001 is an equidigital number, since it uses as much as digits as its factorization.

121242001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460830.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121242001 is about 11010.9945509023. The cubic root of 121242001 is about 494.9382652663.

Adding to 121242001 its reverse (100242121), we get a palindrome (221484122).

The spelling of 121242001 in words is "one hundred twenty-one million, two hundred forty-two thousand, one".