42768529 has 4 divisors (see below), whose sum is σ = 42992640. Its totient is φ = 42544420.

The previous prime is 42768521. The next prime is 42768599. The reversal of 42768529 is 92586724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42768529 - 2³ = 42768521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42768521) 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, 111769 + ... + 112150.

It is an arithmetic number, because the mean of its divisors is an integer number (10748160).

Almost surely, 2^42768529 is an apocalyptic number.

It is an amenable number.

42768529 is a deficient number, since it is larger than the sum of its proper divisors (224111).

42768529 is a wasteful number, since it uses less digits than its factorization.

42768529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224110.

The product of its digits is 241920, while the sum is 43.

The square root of 42768529 is about 6539.7652098527. The cubic root of 42768529 is about 349.7100428448.

The spelling of 42768529 in words is "forty-two million, seven hundred sixty-eight thousand, five hundred twenty-nine".