42536449 has 4 divisors (see below), whose sum is σ = 42750400. Its totient is φ = 42322500.

The previous prime is 42536441. The next prime is 42536467. The reversal of 42536449 is 94463524.

It is a happy number.

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 42536449 - 2³ = 42536441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42536441) 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, 106677 + ... + 107074.

It is an arithmetic number, because the mean of its divisors is an integer number (10687600).

Almost surely, 2^42536449 is an apocalyptic number.

It is an amenable number.

42536449 is a deficient number, since it is larger than the sum of its proper divisors (213951).

42536449 is a wasteful number, since it uses less digits than its factorization.

42536449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213950.

The product of its digits is 103680, while the sum is 37.

The square root of 42536449 is about 6521.9973167734. The cubic root of 42536449 is about 349.0763373543.

The spelling of 42536449 in words is "forty-two million, five hundred thirty-six thousand, four hundred forty-nine".