42303451 has 2 divisors, whose sum is σ = 42303452. Its totient is φ = 42303450.

The previous prime is 42303449. The next prime is 42303461. The reversal of 42303451 is 15430324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42303451 - 2¹ = 42303449 is a prime.

Together with 42303449, it forms a pair of twin primes.

It is equal to p_2565013 and since 42303451 and 2565013 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42303421) 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, 21151725 + 21151726.

It is an arithmetic number, because the mean of its divisors is an integer number (21151726).

Almost surely, 2^42303451 is an apocalyptic number.

42303451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42303451 is an equidigital number, since it uses as much as digits as its factorization.

42303451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 42303451 is about 6504.1103157926. The cubic root of 42303451 is about 348.4378022519.

Adding to 42303451 its reverse (15430324), we get a palindrome (57733775).

The spelling of 42303451 in words is "forty-two million, three hundred three thousand, four hundred fifty-one".