42433645 has 8 divisors (see below), whose sum is σ = 50983704. Its totient is φ = 33904704.

The previous prime is 42433639. The next prime is 42433661. The reversal of 42433645 is 54633424.

It can be written as a sum of positive squares in 4 ways, for example, as 13682601 + 28751044 = 3699^2 + 5362^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42433645 is a prime.

It is a super-3 number, since 3×42433645³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 7 ways as a sum of consecutive naturals, for example, 454 + ... + 9223.

It is an arithmetic number, because the mean of its divisors is an integer number (6372963).

Almost surely, 2^42433645 is an apocalyptic number.

It is an amenable number.

42433645 is a deficient number, since it is larger than the sum of its proper divisors (8550059).

42433645 is an equidigital number, since it uses as much as digits as its factorization.

42433645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10559.

The product of its digits is 34560, while the sum is 31.

The square root of 42433645 is about 6514.1112210339. Note that the first 3 decimals coincide. The cubic root of 42433645 is about 348.7948893713.

The spelling of 42433645 in words is "forty-two million, four hundred thirty-three thousand, six hundred forty-five".