2421123545 has 16 divisors (see below), whose sum is σ = 3080280000. Its totient is φ = 1821745728.

The previous prime is 2421123541. The next prime is 2421123613. The reversal of 2421123545 is 5453211242.

2421123545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2421123545 - 2² = 2421123541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2421123541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78470 + ... + 104879.

It is an arithmetic number, because the mean of its divisors is an integer number (192517500).

Almost surely, 2^2421123545 is an apocalyptic number.

It is an amenable number.

2421123545 is a deficient number, since it is larger than the sum of its proper divisors (659156455).

2421123545 is a wasteful number, since it uses less digits than its factorization.

2421123545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183512.

The product of its digits is 9600, while the sum is 29.

The square root of 2421123545 is about 49204.9138298199. The cubic root of 2421123545 is about 1342.7824312995.

Adding to 2421123545 its reverse (5453211242), we get a palindrome (7874334787).

The spelling of 2421123545 in words is "two billion, four hundred twenty-one million, one hundred twenty-three thousand, five hundred forty-five".