42409769 has 8 divisors (see below), whose sum is σ = 44330112. Its totient is φ = 40495840.

The previous prime is 42409753. The next prime is 42409777. The reversal of 42409769 is 96790424.

42409769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42409769 - 2⁴ = 42409753 is a prime.

It is a super-2 number, since 2×42409769² = 3597177013266722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42409469) 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 7 ways as a sum of consecutive naturals, for example, 16292 + ... + 18714.

It is an arithmetic number, because the mean of its divisors is an integer number (5541264).

Almost surely, 2^42409769 is an apocalyptic number.

It is an amenable number.

42409769 is a deficient number, since it is larger than the sum of its proper divisors (1920343).

42409769 is a wasteful number, since it uses less digits than its factorization.

42409769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3207.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 42409769 is about 6512.2783263617. The cubic root of 42409769 is about 348.7294586720.

The spelling of 42409769 in words is "forty-two million, four hundred nine thousand, seven hundred sixty-nine".