2400120001 has 4 divisors (see below), whose sum is σ = 2451186432. Its totient is φ = 2349053572.

The previous prime is 2400119987. The next prime is 2400120007. The reversal of 2400120001 is 1000210042.

2400120001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is the 20001-st star 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 2400120001 - 2³¹ = 252636353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2400120001.

It is not an unprimeable number, because it can be changed into a prime (2400120007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25533145 + ... + 25533238.

It is an arithmetic number, because the mean of its divisors is an integer number (612796608).

Almost surely, 2^2400120001 is an apocalyptic number.

It is an amenable number.

2400120001 is a deficient number, since it is larger than the sum of its proper divisors (51066431).

2400120001 is an equidigital number, since it uses as much as digits as its factorization.

2400120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51066430.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2400120001 is about 48991.0195954320. The cubic root of 2400120001 is about 1338.8882144101. Note that the first 3 decimals are identical.

Adding to 2400120001 its reverse (1000210042), we get a palindrome (3400330043).

The spelling of 2400120001 in words is "two billion, four hundred million, one hundred twenty thousand, one".