42613409 has 4 divisors (see below), whose sum is σ = 44856240. Its totient is φ = 40370580.

The previous prime is 42613397. The next prime is 42613429. The reversal of 42613409 is 90431624.

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 42613409 - 2⁴ = 42613393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42613429) 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, 1121387 + ... + 1121424.

It is an arithmetic number, because the mean of its divisors is an integer number (11214060).

Almost surely, 2^42613409 is an apocalyptic number.

It is an amenable number.

42613409 is a deficient number, since it is larger than the sum of its proper divisors (2242831).

42613409 is a wasteful number, since it uses less digits than its factorization.

42613409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242830.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 42613409 is about 6527.8946835867. The cubic root of 42613409 is about 349.2867351805.

The spelling of 42613409 in words is "forty-two million, six hundred thirteen thousand, four hundred nine".