42664759 has 4 divisors (see below), whose sum is σ = 42678016. Its totient is φ = 42651504.

The previous prime is 42664753. The next prime is 42664813. The reversal of 42664759 is 95746624.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42664759 - 2¹³ = 42656567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42664753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1627 + ... + 9379.

It is an arithmetic number, because the mean of its divisors is an integer number (10669504).

Almost surely, 2^42664759 is an apocalyptic number.

42664759 is a deficient number, since it is larger than the sum of its proper divisors (13257).

42664759 is an equidigital number, since it uses as much as digits as its factorization.

42664759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13256.

The product of its digits is 362880, while the sum is 43.

The square root of 42664759 is about 6531.8266204791. The cubic root of 42664759 is about 349.4269780034.

It can be divided in two parts, 4266 and 4759, that added together give a square (9025 = 95²).

The spelling of 42664759 in words is "forty-two million, six hundred sixty-four thousand, seven hundred fifty-nine".