4242040431 has 4 divisors (see below), whose sum is σ = 5656053912. Its totient is φ = 2828026952.

The previous prime is 4242040421. The next prime is 4242040457. The reversal of 4242040431 is 1340402424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4242040431 - 2⁶ = 4242040367 is a prime.

It is a super-2 number, since 2×4242040431² = 35989814036477331522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242040421) 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, 707006736 + ... + 707006741.

It is an arithmetic number, because the mean of its divisors is an integer number (1414013478).

Almost surely, 2^4242040431 is an apocalyptic number.

4242040431 is a deficient number, since it is larger than the sum of its proper divisors (1414013481).

4242040431 is a wasteful number, since it uses less digits than its factorization.

4242040431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414013480.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 4242040431 is about 65130.9483348738. The cubic root of 4242040431 is about 1618.7940564010.

Adding to 4242040431 its reverse (1340402424), we get a palindrome (5582442855).

The spelling of 4242040431 in words is "four billion, two hundred forty-two million, forty thousand, four hundred thirty-one".