42510122 has 4 divisors (see below), whose sum is σ = 63765186. Its totient is φ = 21255060.

The previous prime is 42510121. The next prime is 42510131. The reversal of 42510122 is 22101524.

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., 32706961 + 9803161 = 5719^2 + 3131^2 .

It is a super-2 number, since 2×42510122² = 3614220944909768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42510122.

It is not an unprimeable number, because it can be changed into a prime (42510121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10627529 + ... + 10627532.

Almost surely, 2^42510122 is an apocalyptic number.

42510122 is a deficient number, since it is larger than the sum of its proper divisors (21255064).

42510122 is a wasteful number, since it uses less digits than its factorization.

42510122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21255063.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 42510122 is about 6519.9786809467. The cubic root of 42510122 is about 349.0043047829.

Adding to 42510122 its reverse (22101524), we get a palindrome (64611646).

The spelling of 42510122 in words is "forty-two million, five hundred ten thousand, one hundred twenty-two".