2421131545 has 16 divisors (see below), whose sum is σ = 3342700800. Its totient is φ = 1649058624.

The previous prime is 2421131521. The next prime is 2421131561. The reversal of 2421131545 is 5451311242.

It is a cyclic number.

It is not a de Polignac number, because 2421131545 - 2⁵ = 2421131513 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226917 + ... + 237346.

It is an arithmetic number, because the mean of its divisors is an integer number (208918800).

Almost surely, 2^2421131545 is an apocalyptic number.

It is an amenable number.

2421131545 is a deficient number, since it is larger than the sum of its proper divisors (921569255).

2421131545 is a wasteful number, since it uses less digits than its factorization.

2421131545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464424.

The product of its digits is 4800, while the sum is 28.

The square root of 2421131545 is about 49204.9951224467. The cubic root of 2421131545 is about 1342.7839102613.

Adding to 2421131545 its reverse (5451311242), we get a palindrome (7872442787).

The spelling of 2421131545 in words is "two billion, four hundred twenty-one million, one hundred thirty-one thousand, five hundred forty-five".