42422434 has 4 divisors (see below), whose sum is σ = 63633654. Its totient is φ = 21211216.

The previous prime is 42422431. The next prime is 42422453. The reversal of 42422434 is 43422424.

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., 25979409 + 16443025 = 5097^2 + 4055^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42422399 and 42422408.

It is not an unprimeable number, because it can be changed into a prime (42422431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605607 + ... + 10605610.

Almost surely, 2^42422434 is an apocalyptic number.

42422434 is a deficient number, since it is larger than the sum of its proper divisors (21211220).

42422434 is a wasteful number, since it uses less digits than its factorization.

42422434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21211219.

The product of its digits is 6144, while the sum is 25.

The square root of 42422434 is about 6513.2506477181. The cubic root of 42422434 is about 348.7641693776.

Adding to 42422434 its reverse (43422424), we get a palindrome (85844858).

The spelling of 42422434 in words is "forty-two million, four hundred twenty-two thousand, four hundred thirty-four".