42764005 has 4 divisors (see below), whose sum is σ = 51316812. Its totient is φ = 34211200.

The previous prime is 42763991. The next prime is 42764011. The reversal of 42764005 is 50046724.

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 33558849 + 9205156 = 5793^2 + 3034^2 .

It is not a de Polignac number, because 42764005 - 2¹³ = 42755813 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 4276396 + ... + 4276405.

It is an arithmetic number, because the mean of its divisors is an integer number (12829203).

Almost surely, 2^42764005 is an apocalyptic number.

It is an amenable number.

42764005 is a deficient number, since it is larger than the sum of its proper divisors (8552807).

42764005 is an equidigital number, since it uses as much as digits as its factorization.

42764005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8552806.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 42764005 is about 6539.4193167284. The cubic root of 42764005 is about 349.6977117838.

It can be divided in two parts, 4276 and 4005, that added together give a square (8281 = 91²).

The spelling of 42764005 in words is "forty-two million, seven hundred sixty-four thousand, five".