2155242234 has 16 divisors (see below), whose sum is σ = 4311237888. Its totient is φ = 718288512.

The previous prime is 2155242227. The next prime is 2155242239. The reversal of 2155242234 is 4322425512.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2155242239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9994 + ... + 66410.

It is an arithmetic number, because the mean of its divisors is an integer number (269452368).

Almost surely, 2^2155242234 is an apocalyptic number.

2155242234 is an abundant number, since it is smaller than the sum of its proper divisors (2155995654).

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

2155242234 is a wasteful number, since it uses less digits than its factorization.

2155242234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62789.

The product of its digits is 19200, while the sum is 30.

The square root of 2155242234 is about 46424.5865248146. The cubic root of 2155242234 is about 1291.7110148205.

Adding to 2155242234 its reverse (4322425512), we get a palindrome (6477667746).

The spelling of 2155242234 in words is "two billion, one hundred fifty-five million, two hundred forty-two thousand, two hundred thirty-four".