2421131445 has 64 divisors (see below), whose sum is σ = 4515056640. Its totient is φ = 1229520384.

The previous prime is 2421131443. The next prime is 2421131459. The reversal of 2421131445 is 5441311242.

2421131445 is a `hidden beast` number, since 2 + 4 + 211 + 3 + 1 + 445 = 666.

It is not a de Polignac number, because 2421131445 - 2¹ = 2421131443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421131443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 229609 + ... + 239921.

It is an arithmetic number, because the mean of its divisors is an integer number (70547760).

Almost surely, 2^2421131445 is an apocalyptic number.

It is an amenable number.

2421131445 is a deficient number, since it is larger than the sum of its proper divisors (2093925195).

2421131445 is a wasteful number, since it uses less digits than its factorization.

2421131445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10411 (or 10405 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 2421131445 is about 49204.9941062897. The cubic root of 2421131445 is about 1342.7838917743.

Adding to 2421131445 its reverse (5441311242), we get a palindrome (7862442687).

The spelling of 2421131445 in words is "two billion, four hundred twenty-one million, one hundred thirty-one thousand, four hundred forty-five".