2155233142 has 16 divisors (see below), whose sum is σ = 3344501664. Its totient is φ = 1040920000.

The previous prime is 2155233139. The next prime is 2155233163. The reversal of 2155233142 is 2413325512.

It is a super-3 number, since 3×2155233142³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2155233142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121834 + ... + 138397.

It is an arithmetic number, because the mean of its divisors is an integer number (209031354).

Almost surely, 2^2155233142 is an apocalyptic number.

2155233142 is a deficient number, since it is larger than the sum of its proper divisors (1189268522).

2155233142 is a wasteful number, since it uses less digits than its factorization.

2155233142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260375.

The product of its digits is 7200, while the sum is 28.

The square root of 2155233142 is about 46424.4886024607. The cubic root of 2155233142 is about 1291.7091984349.

Adding to 2155233142 its reverse (2413325512), we get a palindrome (4568558654).

The spelling of 2155233142 in words is "two billion, one hundred fifty-five million, two hundred thirty-three thousand, one hundred forty-two".