2142155306 has 8 divisors (see below), whose sum is σ = 3216607524. Its totient is φ = 1069952800.

The previous prime is 2142155221. The next prime is 2142155317. The reversal of 2142155306 is 6035512412.

It can be written as a sum of positive squares in 2 ways, for example, as 2115540025 + 26615281 = 45995^2 + 5159^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560045 + ... + 563856.

Almost surely, 2^2142155306 is an apocalyptic number.

2142155306 is a deficient number, since it is larger than the sum of its proper divisors (1074452218).

2142155306 is a wasteful number, since it uses less digits than its factorization.

2142155306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124856.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2142155306 is about 46283.4236633376. The cubic root of 2142155306 is about 1289.0912226046.

Adding to 2142155306 its reverse (6035512412), we get a palindrome (8177667718).

The spelling of 2142155306 in words is "two billion, one hundred forty-two million, one hundred fifty-five thousand, three hundred six".