42546449 has 4 divisors (see below), whose sum is σ = 46414320. Its totient is φ = 38678580.

The previous prime is 42546443. The next prime is 42546457. The reversal of 42546449 is 94464524.

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 42546449 - 2⁸ = 42546193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42546443) 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, 1933919 + ... + 1933940.

It is an arithmetic number, because the mean of its divisors is an integer number (11603580).

Almost surely, 2^42546449 is an apocalyptic number.

It is an amenable number.

42546449 is a deficient number, since it is larger than the sum of its proper divisors (3867871).

42546449 is a wasteful number, since it uses less digits than its factorization.

42546449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867870.

The product of its digits is 138240, while the sum is 38.

The square root of 42546449 is about 6522.7639080378. The cubic root of 42546449 is about 349.1036902868.

The spelling of 42546449 in words is "forty-two million, five hundred forty-six thousand, four hundred forty-nine".