42890773 has 4 divisors (see below), whose sum is σ = 42917580. Its totient is φ = 42863968.

The previous prime is 42890767. The next prime is 42890789. The reversal of 42890773 is 37709824.

42890773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10195249 + 32695524 = 3193^2 + 5718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42890773 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42890173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10840 + ... + 14257.

It is an arithmetic number, because the mean of its divisors is an integer number (10729395).

Almost surely, 2^42890773 is an apocalyptic number.

It is an amenable number.

42890773 is a deficient number, since it is larger than the sum of its proper divisors (26807).

42890773 is a wasteful number, since it uses less digits than its factorization.

42890773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26806.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 42890773 is about 6549.1047479789. The cubic root of 42890773 is about 350.0429144658.

The spelling of 42890773 in words is "forty-two million, eight hundred ninety thousand, seven hundred seventy-three".