42307451 has 2 divisors, whose sum is σ = 42307452. Its totient is φ = 42307450.

The previous prime is 42307439. The next prime is 42307457. The reversal of 42307451 is 15470324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42307451 - 2⁶ = 42307387 is a prime.

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 42307451.

It is not a weakly prime, because it can be changed into another prime (42307457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21153725 + 21153726.

It is an arithmetic number, because the mean of its divisors is an integer number (21153726).

Almost surely, 2^42307451 is an apocalyptic number.

42307451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42307451 is an equidigital number, since it uses as much as digits as its factorization.

42307451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 42307451 is about 6504.4178063836. The cubic root of 42307451 is about 348.4487840769.

Adding to 42307451 its reverse (15470324), we get a palindrome (57777775).

The spelling of 42307451 in words is "forty-two million, three hundred seven thousand, four hundred fifty-one".