4320042251 has 4 divisors (see below), whose sum is σ = 4937191152. Its totient is φ = 3702893352.

The previous prime is 4320042239. The next prime is 4320042283. The reversal of 4320042251 is 1522400234.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1522400234 = 2 ⋅761200117.

It is a cyclic number.

It is not a de Polignac number, because 4320042251 - 2⁶ = 4320042187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4320042751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308574440 + ... + 308574453.

It is an arithmetic number, because the mean of its divisors is an integer number (1234297788).

Almost surely, 2^4320042251 is an apocalyptic number.

4320042251 is a deficient number, since it is larger than the sum of its proper divisors (617148901).

4320042251 is an equidigital number, since it uses as much as digits as its factorization.

4320042251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617148900.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 4320042251 is about 65727.0283140810. The cubic root of 4320042251 is about 1628.6558795164.

Adding to 4320042251 its reverse (1522400234), we get a palindrome (5842442485).

The spelling of 4320042251 in words is "four billion, three hundred twenty million, forty-two thousand, two hundred fifty-one".