42736433 has 4 divisors (see below), whose sum is σ = 43159668. Its totient is φ = 42313200.

The previous prime is 42736427. The next prime is 42736457. The reversal of 42736433 is 33463724.

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 35724529 + 7011904 = 5977^2 + 2648^2 .

It is a cyclic number.

It is not a de Polignac number, because 42736433 - 2¹⁴ = 42720049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42736433.

It is not an unprimeable number, because it can be changed into a prime (42736423) 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, 211466 + ... + 211667.

It is an arithmetic number, because the mean of its divisors is an integer number (10789917).

Almost surely, 2^42736433 is an apocalyptic number.

It is an amenable number.

42736433 is a deficient number, since it is larger than the sum of its proper divisors (423235).

42736433 is a wasteful number, since it uses less digits than its factorization.

42736433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423234.

The product of its digits is 36288, while the sum is 32.

The square root of 42736433 is about 6537.3108385635. The cubic root of 42736433 is about 349.6225400107.

The spelling of 42736433 in words is "forty-two million, seven hundred thirty-six thousand, four hundred thirty-three".