42904045 has 16 divisors (see below), whose sum is σ = 52710912. Its totient is φ = 33514560.

The previous prime is 42904027. The next prime is 42904129. The reversal of 42904045 is 54040924.

It is not a de Polignac number, because 42904045 - 2¹⁷ = 42772973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49284 + ... + 50146.

It is an arithmetic number, because the mean of its divisors is an integer number (3294432).

Almost surely, 2^42904045 is an apocalyptic number.

It is an amenable number.

42904045 is a deficient number, since it is larger than the sum of its proper divisors (9806867).

42904045 is a wasteful number, since it uses less digits than its factorization.

42904045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 42904045 is about 6550.1179378695. The cubic root of 42904045 is about 350.0790161735.

Adding to 42904045 its reverse (54040924), we get a palindrome (96944969).

The spelling of 42904045 in words is "forty-two million, nine hundred four thousand, forty-five".