42772449 has 4 divisors (see below), whose sum is σ = 57029936. Its totient is φ = 28514964.

The previous prime is 42772423. The next prime is 42772453. The reversal of 42772449 is 94427724.

42772449 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42772449 - 2⁷ = 42772321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42772489) 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, 7128739 + ... + 7128744.

It is an arithmetic number, because the mean of its divisors is an integer number (14257484).

Almost surely, 2^42772449 is an apocalyptic number.

It is an amenable number.

42772449 is a deficient number, since it is larger than the sum of its proper divisors (14257487).

42772449 is a wasteful number, since it uses less digits than its factorization.

42772449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14257486.

The product of its digits is 112896, while the sum is 39.

The square root of 42772449 is about 6540.0649079348. The cubic root of 42772449 is about 349.7207268806.

The spelling of 42772449 in words is "forty-two million, seven hundred seventy-two thousand, four hundred forty-nine".