42434405 has 8 divisors (see below), whose sum is σ = 54838392. Its totient is φ = 31336128.

The previous prime is 42434401. The next prime is 42434411. The reversal of 42434405 is 50443424.

It can be written as a sum of positive squares in 4 ways, for example, as 6061444 + 36372961 = 2462^2 + 6031^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42434405 - 2² = 42434401 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 (42434401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326354 + ... + 326483.

It is an arithmetic number, because the mean of its divisors is an integer number (6854799).

Almost surely, 2^42434405 is an apocalyptic number.

It is an amenable number.

42434405 is a deficient number, since it is larger than the sum of its proper divisors (12403987).

42434405 is a wasteful number, since it uses less digits than its factorization.

42434405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652855.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 42434405 is about 6514.1695556686. The cubic root of 42434405 is about 348.7969717012.

Adding to 42434405 its reverse (50443424), we get a palindrome (92877829).

The spelling of 42434405 in words is "forty-two million, four hundred thirty-four thousand, four hundred five".