42303442 has 4 divisors (see below), whose sum is σ = 63455166. Its totient is φ = 21151720.

The previous prime is 42303421. The next prime is 42303449. The reversal of 42303442 is 24430324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 34680321 + 7623121 = 5889^2 + 2761^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42303449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10575859 + ... + 10575862.

Almost surely, 2^42303442 is an apocalyptic number.

42303442 is a deficient number, since it is larger than the sum of its proper divisors (21151724).

42303442 is a wasteful number, since it uses less digits than its factorization.

42303442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21151723.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 42303442 is about 6504.1096239224. The cubic root of 42303442 is about 348.4377775421.

Adding to 42303442 its reverse (24430324), we get a palindrome (66733766).

The spelling of 42303442 in words is "forty-two million, three hundred three thousand, four hundred forty-two".