449172042 has 32 divisors (see below), whose sum is σ = 982195200. Its totient is φ = 135809520.

The previous prime is 449172029. The next prime is 449172043. The reversal of 449172042 is 240271944.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 449171994 and 449172012.

It is not an unprimeable number, because it can be changed into a prime (449172043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23209 + ... + 37907.

It is an arithmetic number, because the mean of its divisors is an integer number (30693600).

Almost surely, 2^449172042 is an apocalyptic number.

449172042 is an abundant number, since it is smaller than the sum of its proper divisors (533023158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449172042 is a wasteful number, since it uses less digits than its factorization.

449172042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15178.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 449172042 is about 21193.6792936007. The cubic root of 449172042 is about 765.8391645814.

The spelling of 449172042 in words is "four hundred forty-nine million, one hundred seventy-two thousand, forty-two".