42735745 has 8 divisors (see below), whose sum is σ = 55227816. Its totient is φ = 31558656.

The previous prime is 42735697. The next prime is 42735757. The reversal of 42735745 is 54753724.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 641601 + 42094144 = 801^2 + 6488^2 .

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 42735745 - 2¹¹ = 42733697 is a prime.

It is a Duffinian 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, 328672 + ... + 328801.

It is an arithmetic number, because the mean of its divisors is an integer number (6903477).

Almost surely, 2^42735745 is an apocalyptic number.

It is an amenable number.

42735745 is a deficient number, since it is larger than the sum of its proper divisors (12492071).

42735745 is a wasteful number, since it uses less digits than its factorization.

42735745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657491.

The product of its digits is 117600, while the sum is 37.

The square root of 42735745 is about 6537.2582173263. The cubic root of 42735745 is about 349.6206638473.

The spelling of 42735745 in words is "forty-two million, seven hundred thirty-five thousand, seven hundred forty-five".