451846642 has 16 divisors (see below), whose sum is σ = 741874392. Its totient is φ = 205125120.

The previous prime is 451846601. The next prime is 451846649. The reversal of 451846642 is 246648154.

It can be written as a sum of positive squares in 4 ways, for example, as 256992961 + 194853681 = 16031^2 + 13959^2 .

It is a junction number, because it is equal to n+sod(n) for n = 451846595 and 451846604.

It is not an unprimeable number, because it can be changed into a prime (451846649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140863 + ... + 144034.

Almost surely, 2^451846642 is an apocalyptic number.

451846642 is a deficient number, since it is larger than the sum of its proper divisors (290027750).

451846642 is a wasteful number, since it uses less digits than its factorization.

451846642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284973.

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

The square root of 451846642 is about 21256.6846427189. The cubic root of 451846642 is about 767.3562234260.

The spelling of 451846642 in words is "four hundred fifty-one million, eight hundred forty-six thousand, six hundred forty-two".