2145555242 has 8 divisors (see below), whose sum is σ = 3218529600. Its totient is φ = 1072712044.

The previous prime is 2145555197. The next prime is 2145555263. The reversal of 2145555242 is 2425555412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45359 + ... + 79677.

It is an arithmetic number, because the mean of its divisors is an integer number (402316200).

Almost surely, 2^2145555242 is an apocalyptic number.

2145555242 is a deficient number, since it is larger than the sum of its proper divisors (1072974358).

2145555242 is a wasteful number, since it uses less digits than its factorization.

2145555242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65580.

The product of its digits is 80000, while the sum is 35.

The square root of 2145555242 is about 46320.1386224178. The cubic root of 2145555242 is about 1289.7728586716.

The spelling of 2145555242 in words is "two billion, one hundred forty-five million, five hundred fifty-five thousand, two hundred forty-two".