42404353 has 4 divisors (see below), whose sum is σ = 42562260. Its totient is φ = 42246448.

The previous prime is 42404269. The next prime is 42404359. The reversal of 42404353 is 35340424.

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 21455424 + 20948929 = 4632^2 + 4577^2 .

It is a cyclic number.

It is not a de Polignac number, because 42404353 - 2²⁵ = 8849921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42404359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78550 + ... + 79087.

It is an arithmetic number, because the mean of its divisors is an integer number (10640565).

Almost surely, 2^42404353 is an apocalyptic number.

It is an amenable number.

42404353 is a deficient number, since it is larger than the sum of its proper divisors (157907).

42404353 is a wasteful number, since it uses less digits than its factorization.

42404353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157906.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 42404353 is about 6511.8624831917. The cubic root of 42404353 is about 348.7146130425.

Adding to 42404353 its reverse (35340424), we get a palindrome (77744777).

The spelling of 42404353 in words is "forty-two million, four hundred four thousand, three hundred fifty-three".