10042779 has 16 divisors (see below), whose sum is σ = 13832192. Its totient is φ = 6477408.

The previous prime is 10042777. The next prime is 10042807. The reversal of 10042779 is 97724001.

It is not a de Polignac number, because 10042779 - 2¹ = 10042777 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10042771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16077 + ... + 16689.

It is an arithmetic number, because the mean of its divisors is an integer number (864512).

Almost surely, 2^10042779 is an apocalyptic number.

10042779 is a deficient number, since it is larger than the sum of its proper divisors (3789413).

10042779 is a wasteful number, since it uses less digits than its factorization.

10042779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 10042779 is about 3169.0343955218. The cubic root of 10042779 is about 215.7502471681.

The spelling of 10042779 in words is "ten million, forty-two thousand, seven hundred seventy-nine".