42404045 has 16 divisors (see below), whose sum is σ = 52557120. Its totient is φ = 32822400.

The previous prime is 42404039. The next prime is 42404083. The reversal of 42404045 is 54040424.

It is not a de Polignac number, because 42404045 - 2⁶ = 42403981 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42404045.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 26066 + ... + 27644.

It is an arithmetic number, because the mean of its divisors is an integer number (3284820).

Almost surely, 2^42404045 is an apocalyptic number.

It is an amenable number.

42404045 is a deficient number, since it is larger than the sum of its proper divisors (10153075).

42404045 is a wasteful number, since it uses less digits than its factorization.

42404045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 42404045 is about 6511.8388340007. The cubic root of 42404045 is about 348.7137687553.

Adding to 42404045 its reverse (54040424), we get a palindrome (96444469).

The spelling of 42404045 in words is "forty-two million, four hundred four thousand, forty-five".