451994942 has 32 divisors (see below), whose sum is σ = 834637824. Its totient is φ = 179308800.

The previous prime is 451994941. The next prime is 451994951. The reversal of 451994942 is 249499154.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451994941) 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 15 ways as a sum of consecutive naturals, for example, 12659 + ... + 32622.

It is an arithmetic number, because the mean of its divisors is an integer number (26082432).

Almost surely, 2^451994942 is an apocalyptic number.

451994942 is a deficient number, since it is larger than the sum of its proper divisors (382642882).

451994942 is a wasteful number, since it uses less digits than its factorization.

451994942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45344.

The product of its digits is 466560, while the sum is 47.

The square root of 451994942 is about 21260.1726709827. The cubic root of 451994942 is about 767.4401652399.

The spelling of 451994942 in words is "four hundred fifty-one million, nine hundred ninety-four thousand, nine hundred forty-two".