42424451 has 2 divisors, whose sum is σ = 42424452. Its totient is φ = 42424450.

The previous prime is 42424429. The next prime is 42424453. The reversal of 42424451 is 15442424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42424451 - 2⁶ = 42424387 is a prime.

Together with 42424453, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42424451.

It is not a weakly prime, because it can be changed into another prime (42424453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21212225 + 21212226.

It is an arithmetic number, because the mean of its divisors is an integer number (21212226).

Almost surely, 2^42424451 is an apocalyptic number.

42424451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42424451 is an equidigital number, since it uses as much as digits as its factorization.

42424451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5120, while the sum is 26.

The square root of 42424451 is about 6513.4054840767. The cubic root of 42424451 is about 348.7696966903.

Adding to 42424451 its reverse (15442424), we get a palindrome (57866875).

It can be divided in two parts, 42424 and 451, that added together give a cube (42875 = 35³).

The spelling of 42424451 in words is "forty-two million, four hundred twenty-four thousand, four hundred fifty-one".