42733745 has 4 divisors (see below), whose sum is σ = 51280500. Its totient is φ = 34186992.

The previous prime is 42733729. The next prime is 42733751. The reversal of 42733745 is 54733724.

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 30294016 + 12439729 = 5504^2 + 3527^2 .

It is a cyclic number.

It is not a de Polignac number, because 42733745 - 2⁴ = 42733729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4273370 + ... + 4273379.

It is an arithmetic number, because the mean of its divisors is an integer number (12820125).

Almost surely, 2^42733745 is an apocalyptic number.

It is an amenable number.

42733745 is a deficient number, since it is larger than the sum of its proper divisors (8546755).

42733745 is an equidigital number, since it uses as much as digits as its factorization.

42733745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8546754.

The product of its digits is 70560, while the sum is 35.

The square root of 42733745 is about 6537.1052462080. The cubic root of 42733745 is about 349.6152097695.

The spelling of 42733745 in words is "forty-two million, seven hundred thirty-three thousand, seven hundred forty-five".