449840542 has 16 divisors (see below), whose sum is σ = 713260800. Its totient is φ = 212186520.

The previous prime is 449840537. The next prime is 449840549. The reversal of 449840542 is 245048944.

It is a junction number, because it is equal to n+sod(n) for n = 449840495 and 449840504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449840549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15684 + ... + 33847.

It is an arithmetic number, because the mean of its divisors is an integer number (44578800).

Almost surely, 2^449840542 is an apocalyptic number.

449840542 is a deficient number, since it is larger than the sum of its proper divisors (263420258).

449840542 is a wasteful number, since it uses less digits than its factorization.

449840542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49791.

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 449840542 is about 21209.4446414799. Note that the first 3 decimals coincide. The cubic root of 449840542 is about 766.2189075006.

The spelling of 449840542 in words is "four hundred forty-nine million, eight hundred forty thousand, five hundred forty-two".