4024400121 has 24 divisors (see below), whose sum is σ = 6646086720. Its totient is φ = 2298746016.

The previous prime is 4024400111. The next prime is 4024400147. The reversal of 4024400121 is 1210044204.

It is not a de Polignac number, because 4024400121 - 2⁷ = 4024399993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4024400094 and 4024400103.

It is not an unprimeable number, because it can be changed into a prime (4024400111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167875 + ... + 190343.

It is an arithmetic number, because the mean of its divisors is an integer number (276920280).

Almost surely, 2^4024400121 is an apocalyptic number.

It is an amenable number.

4024400121 is a deficient number, since it is larger than the sum of its proper divisors (2621686599).

4024400121 is a wasteful number, since it uses less digits than its factorization.

4024400121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25325 (or 25322 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4024400121 is about 63438.1598172583. The cubic root of 4024400121 is about 1590.6222425119.

Adding to 4024400121 its reverse (1210044204), we get a palindrome (5234444325).

The spelling of 4024400121 in words is "four billion, twenty-four million, four hundred thousand, one hundred twenty-one".