2145423210 has 64 divisors (see below), whose sum is σ = 6140454912. Its totient is φ = 469060416.

The previous prime is 2145423173. The next prime is 2145423221. The reversal of 2145423210 is 123245412.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217264 + ... + 226923.

It is an arithmetic number, because the mean of its divisors is an integer number (95944608).

Almost surely, 2^2145423210 is an apocalyptic number.

2145423210 is an abundant number, since it is smaller than the sum of its proper divisors (3995031702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145423210 is a wasteful number, since it uses less digits than its factorization.

2145423210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444227.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2145423210 is about 46318.7133888669. The cubic root of 2145423210 is about 1289.7464016843.

Adding to 2145423210 its reverse (123245412), we get a palindrome (2268668622).

The spelling of 2145423210 in words is "two billion, one hundred forty-five million, four hundred twenty-three thousand, two hundred ten".