42404053 has 4 divisors (see below), whose sum is σ = 42619500. Its totient is φ = 42188608.

The previous prime is 42404039. The next prime is 42404083. The reversal of 42404053 is 35040424.

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 2 ways, for example, as 39917124 + 2486929 = 6318^2 + 1577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42404053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42404083) 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 in 3 ways as a sum of consecutive naturals, for example, 107428 + ... + 107821.

It is an arithmetic number, because the mean of its divisors is an integer number (10654875).

Almost surely, 2^42404053 is an apocalyptic number.

It is an amenable number.

42404053 is a deficient number, since it is larger than the sum of its proper divisors (215447).

42404053 is a wasteful number, since it uses less digits than its factorization.

42404053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215446.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42404053 is about 6511.8394482665. The cubic root of 42404053 is about 348.7137906849.

Adding to 42404053 its reverse (35040424), we get a palindrome (77444477).

The spelling of 42404053 in words is "forty-two million, four hundred four thousand, fifty-three".