4242332391 has 16 divisors (see below), whose sum is σ = 6231765888. Its totient is φ = 2545652000.

The previous prime is 4242332383. The next prime is 4242332441. The reversal of 4242332391 is 1932332424.

It is a cyclic number.

It is not a de Polignac number, because 4242332391 - 2³ = 4242332383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242332351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633081 + ... + 639746.

It is an arithmetic number, because the mean of its divisors is an integer number (389485368).

Almost surely, 2^4242332391 is an apocalyptic number.

4242332391 is a deficient number, since it is larger than the sum of its proper divisors (1989433497).

4242332391 is a wasteful number, since it uses less digits than its factorization.

4242332391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272942.

The product of its digits is 31104, while the sum is 33.

The square root of 4242332391 is about 65133.1896271018. The cubic root of 4242332391 is about 1618.8311935820.

Adding to 4242332391 its sum of digits (33), we get a palindrome (4242332424).

It can be divided in two parts, 424233 and 2391, that added together give a palindrome (426624).

The spelling of 4242332391 in words is "four billion, two hundred forty-two million, three hundred thirty-two thousand, three hundred ninety-one".