42254434 has 4 divisors (see below), whose sum is σ = 63381654. Its totient is φ = 21127216.

The previous prime is 42254417. The next prime is 42254437. The reversal of 42254434 is 43445224.

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., 36566209 + 5688225 = 6047^2 + 2385^2 .

It is not an unprimeable number, because it can be changed into a prime (42254437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10563607 + ... + 10563610.

Almost surely, 2^42254434 is an apocalyptic number.

42254434 is a deficient number, since it is larger than the sum of its proper divisors (21127220).

42254434 is a wasteful number, since it uses less digits than its factorization.

42254434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21127219.

The product of its digits is 15360, while the sum is 28.

The square root of 42254434 is about 6500.3410679748. The cubic root of 42254434 is about 348.3031719698.

Adding to 42254434 its reverse (43445224), we get a palindrome (85699658).

The spelling of 42254434 in words is "forty-two million, two hundred fifty-four thousand, four hundred thirty-four".