42346809 has 12 divisors (see below), whose sum is σ = 62660052. Its totient is φ = 27542400.

The previous prime is 42346793. The next prime is 42346831. The reversal of 42346809 is 90864324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 705600 + 41641209 = 840^2 + 6453^2 .

It is not a de Polignac number, because 42346809 - 2⁴ = 42346793 is a prime.

It is a super-3 number, since 3×42346809³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42346879) 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 11 ways as a sum of consecutive naturals, for example, 57012 + ... + 57749.

It is an arithmetic number, because the mean of its divisors is an integer number (5221671).

Almost surely, 2^42346809 is an apocalyptic number.

It is an amenable number.

42346809 is a deficient number, since it is larger than the sum of its proper divisors (20313243).

42346809 is a wasteful number, since it uses less digits than its factorization.

42346809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114808 (or 114805 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 42346809 is about 6507.4425852250. The cubic root of 42346809 is about 348.5568028490.

The spelling of 42346809 in words is "forty-two million, three hundred forty-six thousand, eight hundred nine".