42217769 has 4 divisors (see below), whose sum is σ = 46055760. Its totient is φ = 38379780.

The previous prime is 42217757. The next prime is 42217793. The reversal of 42217769 is 96771224.

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 42217769 - 2¹⁶ = 42152233 is a prime.

It is a super-2 number, since 2×42217769² = 3564680038674722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12217769) 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, 1918979 + ... + 1919000.

It is an arithmetic number, because the mean of its divisors is an integer number (11513940).

Almost surely, 2^42217769 is an apocalyptic number.

It is an amenable number.

42217769 is a deficient number, since it is larger than the sum of its proper divisors (3837991).

42217769 is a wasteful number, since it uses less digits than its factorization.

42217769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837990.

The product of its digits is 42336, while the sum is 38.

The square root of 42217769 is about 6497.5202192837. The cubic root of 42217769 is about 348.2023996554.

The spelling of 42217769 in words is "forty-two million, two hundred seventeen thousand, seven hundred sixty-nine".