42768017 has 4 divisors (see below), whose sum is σ = 44627520. Its totient is φ = 40908516.

The previous prime is 42768013. The next prime is 42768023. The reversal of 42768017 is 71086724.

It is a happy number.

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 42768017 - 2² = 42768013 is a prime.

It is a super-2 number, since 2×42768017² = 3658206556224578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42768013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929717 + ... + 929762.

It is an arithmetic number, because the mean of its divisors is an integer number (11156880).

Almost surely, 2^42768017 is an apocalyptic number.

It is an amenable number.

42768017 is a deficient number, since it is larger than the sum of its proper divisors (1859503).

42768017 is a wasteful number, since it uses less digits than its factorization.

42768017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859502.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 42768017 is about 6539.7260645993. The cubic root of 42768017 is about 349.7086473307.

The spelling of 42768017 in words is "forty-two million, seven hundred sixty-eight thousand, seventeen".