2155344142 has 16 divisors (see below), whose sum is σ = 3773491200. Its totient is φ = 904065048.

The previous prime is 2155344043. The next prime is 2155344151. The reversal of 2155344142 is 2414435512.

It is a super-3 number, since 3×2155344142³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1637142 + ... + 1638457.

It is an arithmetic number, because the mean of its divisors is an integer number (235843200).

Almost surely, 2^2155344142 is an apocalyptic number.

2155344142 is a deficient number, since it is larger than the sum of its proper divisors (1618147058).

2155344142 is a wasteful number, since it uses less digits than its factorization.

2155344142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275655.

The product of its digits is 19200, while the sum is 31.

The square root of 2155344142 is about 46425.6840768125. The cubic root of 2155344142 is about 1291.7313734928.

Adding to 2155344142 its reverse (2414435512), we get a palindrome (4569779654).

The spelling of 2155344142 in words is "two billion, one hundred fifty-five million, three hundred forty-four thousand, one hundred forty-two".