2151324442 has 8 divisors (see below), whose sum is σ = 3258937332. Its totient is φ = 1065012000.

The previous prime is 2151324437. The next prime is 2151324473. The reversal of 2151324442 is 2444231512.

It can be written as a sum of positive squares in 2 ways, for example, as 2140820361 + 10504081 = 46269^2 + 3241^2 .

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

It is a super-2 number, since 2×2151324442² = 9256393709493222728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2151324442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5324859 + ... + 5325262.

Almost surely, 2^2151324442 is an apocalyptic number.

2151324442 is a deficient number, since it is larger than the sum of its proper divisors (1107612890).

2151324442 is a wasteful number, since it uses less digits than its factorization.

2151324442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10650224.

The product of its digits is 7680, while the sum is 28.

The square root of 2151324442 is about 46382.3721040656. The cubic root of 2151324442 is about 1290.9278507884.

Adding to 2151324442 its reverse (2444231512), we get a palindrome (4595555954).

The spelling of 2151324442 in words is "two billion, one hundred fifty-one million, three hundred twenty-four thousand, four hundred forty-two".