2155042430 has 32 divisors (see below), whose sum is σ = 3990155040. Its totient is φ = 837406080.

The previous prime is 2155042429. The next prime is 2155042447. The reversal of 2155042430 is 342405512.

It is a happy number.

2155042430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2155042430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251456 + ... + 259884.

It is an arithmetic number, because the mean of its divisors is an integer number (124692345).

Almost surely, 2^2155042430 is an apocalyptic number.

2155042430 is a deficient number, since it is larger than the sum of its proper divisors (1835112610).

2155042430 is a wasteful number, since it uses less digits than its factorization.

2155042430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9164.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2155042430 is about 46422.4345548572. The cubic root of 2155042430 is about 1291.6710971105.

Adding to 2155042430 its reverse (342405512), we get a palindrome (2497447942).

The spelling of 2155042430 in words is "two billion, one hundred fifty-five million, forty-two thousand, four hundred thirty".