42735789 has 16 divisors (see below), whose sum is σ = 63414400. Its totient is φ = 28444608.

The previous prime is 42735757. The next prime is 42735799. The reversal of 42735789 is 98753724.

42735789 is a `hidden beast` number, since 4 + 2 + 73 + 578 + 9 = 666.

It is not a de Polignac number, because 42735789 - 2⁵ = 42735757 is a prime.

It is a super-2 number, since 2×42735789² = 3652695322905042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42735799) 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 15 ways as a sum of consecutive naturals, for example, 27957 + ... + 29445.

It is an arithmetic number, because the mean of its divisors is an integer number (3963400).

Almost surely, 2^42735789 is an apocalyptic number.

It is an amenable number.

42735789 is a deficient number, since it is larger than the sum of its proper divisors (20678611).

42735789 is a wasteful number, since it uses less digits than its factorization.

42735789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561 (or 2555 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 42735789 is about 6537.2615826506. The cubic root of 42735789 is about 349.6207838351.

The spelling of 42735789 in words is "forty-two million, seven hundred thirty-five thousand, seven hundred eighty-nine".