42401042 has 4 divisors (see below), whose sum is σ = 63601566. Its totient is φ = 21200520.

The previous prime is 42401033. The next prime is 42401059. The reversal of 42401042 is 24010424.

42401042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 42393121 + 7921 = 6511^2 + 89^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42401042.

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, 10600259 + ... + 10600262.

Almost surely, 2^42401042 is an apocalyptic number.

42401042 is a deficient number, since it is larger than the sum of its proper divisors (21200524).

42401042 is a wasteful number, since it uses less digits than its factorization.

42401042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21200523.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 42401042 is about 6511.6082498873. The cubic root of 42401042 is about 348.7055367406.

Adding to 42401042 its reverse (24010424), we get a palindrome (66411466).

The spelling of 42401042 in words is "forty-two million, four hundred one thousand, forty-two".