4242023402121 has 12 divisors (see below), whose sum is σ = 6128603304772. Its totient is φ = 2827445062176.

The previous prime is 4242023402117. The next prime is 4242023402173. The reversal of 4242023402121 is 1212043202424.

It is a happy number.

4242023402121 is a `hidden beast` number, since 4 + 2 + 420 + 23 + 4 + 0 + 212 + 1 = 666.

4242023402121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4065018083721 + 177005318400 = 2016189^2 + 420720^2 .

It is not a de Polignac number, because 4242023402121 - 2² = 4242023402117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4242023402821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47497846 + ... + 47587071.

Almost surely, 2^{4242023402121} is an apocalyptic number.

It is an amenable number.

4242023402121 is a deficient number, since it is larger than the sum of its proper divisors (1886579902651).

4242023402121 is a wasteful number, since it uses less digits than its factorization.

4242023402121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95089880 (or 95089877 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 4242023402121 its reverse (1212043202424), we get a palindrome (5454066604545).

The spelling of 4242023402121 in words is "four trillion, two hundred forty-two billion, twenty-three million, four hundred two thousand, one hundred twenty-one".