42459605 has 4 divisors (see below), whose sum is σ = 50951532. Its totient is φ = 33967680.

The previous prime is 42459601. The next prime is 42459629. The reversal of 42459605 is 50695424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6195121 + 36264484 = 2489^2 + 6022^2 .

It is not a de Polignac number, because 42459605 - 2² = 42459601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42459601) 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, 4245956 + ... + 4245965.

It is an arithmetic number, because the mean of its divisors is an integer number (12737883).

Almost surely, 2^42459605 is an apocalyptic number.

It is an amenable number.

42459605 is a deficient number, since it is larger than the sum of its proper divisors (8491927).

42459605 is an equidigital number, since it uses as much as digits as its factorization.

42459605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8491926.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 42459605 is about 6516.1035136038. The cubic root of 42459605 is about 348.8660032988.

The spelling of 42459605 in words is "forty-two million, four hundred fifty-nine thousand, six hundred five".