42372779 has 4 divisors (see below), whose sum is σ = 42386184. Its totient is φ = 42359376.

The previous prime is 42372773. The next prime is 42372787. The reversal of 42372779 is 97727324.

42372779 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 brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42372779 - 2⁴ = 42372763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42372773) 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, 959 + ... + 9255.

It is an arithmetic number, because the mean of its divisors is an integer number (10596546).

Almost surely, 2^42372779 is an apocalyptic number.

42372779 is a deficient number, since it is larger than the sum of its proper divisors (13405).

42372779 is an equidigital number, since it uses as much as digits as its factorization.

42372779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13404.

The product of its digits is 148176, while the sum is 41.

The square root of 42372779 is about 6509.4376869281. The cubic root of 42372779 is about 348.6280413561.

The spelling of 42372779 in words is "forty-two million, three hundred seventy-two thousand, seven hundred seventy-nine".