42344473 has 2 divisors, whose sum is σ = 42344474. Its totient is φ = 42344472.

The previous prime is 42344461. The next prime is 42344479. The reversal of 42344473 is 37444324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40347904 + 1996569 = 6352^2 + 1413^2 .

It is a cyclic number.

It is not a de Polignac number, because 42344473 - 2²¹ = 40247321 is a prime.

It is not a weakly prime, because it can be changed into another prime (42344479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21172236 + 21172237.

It is an arithmetic number, because the mean of its divisors is an integer number (21172237).

Almost surely, 2^42344473 is an apocalyptic number.

It is an amenable number.

42344473 is a deficient number, since it is larger than the sum of its proper divisors (1).

42344473 is an equidigital number, since it uses as much as digits as its factorization.

42344473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 31.

The square root of 42344473 is about 6507.2630959567. The cubic root of 42344473 is about 348.5503935218.

Adding to 42344473 its reverse (37444324), we get a palindrome (79788797).

The spelling of 42344473 in words is "forty-two million, three hundred forty-four thousand, four hundred seventy-three".