425044042 has 4 divisors (see below), whose sum is σ = 637566066. Its totient is φ = 212522020.

The previous prime is 425044019. The next prime is 425044063. The reversal of 425044042 is 240440524.

It is a happy number.

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., 379899081 + 45144961 = 19491^2 + 6719^2 .

It is a junction number, because it is equal to n+sod(n) for n = 425043998 and 425044016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106261009 + ... + 106261012.

Almost surely, 2^425044042 is an apocalyptic number.

425044042 is a deficient number, since it is larger than the sum of its proper divisors (212522024).

425044042 is a wasteful number, since it uses less digits than its factorization.

425044042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212522023.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 425044042 is about 20616.5962758162. The cubic root of 425044042 is about 751.8732680750.

Adding to 425044042 its reverse (240440524), we get a palindrome (665484566).

The spelling of 425044042 in words is "four hundred twenty-five million, forty-four thousand, forty-two".