7442431 has 2 divisors, whose sum is σ = 7442432. Its totient is φ = 7442430.

The previous prime is 7442399. The next prime is 7442453. The reversal of 7442431 is 1342447.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7442431 - 2⁵ = 7442399 is a prime.

It is a super-2 number, since 2×7442431² = 110779558379522, which contains 22 as substring.

7442431 is a lucky number.

It is equal to p₅₀₄₆₄₆ and since 7442431 and 504646 have the same sum of digits, it is a Honaker prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 7442396 and 7442405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7442231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3721215 + 3721216.

It is an arithmetic number, because the mean of its divisors is an integer number (3721216).

Almost surely, 2^7442431 is an apocalyptic number.

7442431 is a deficient number, since it is larger than the sum of its proper divisors (1).

7442431 is an equidigital number, since it uses as much as digits as its factorization.

7442431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 25.

The square root of 7442431 is about 2728.0819269223. The cubic root of 7442431 is about 195.2412617552.

Adding to 7442431 its reverse (1342447), we get a palindrome (8784878).

The spelling of 7442431 in words is "seven million, four hundred forty-two thousand, four hundred thirty-one".