672991042 has 8 divisors (see below), whose sum is σ = 1010854800. Its totient is φ = 336039444.

The previous prime is 672991013. The next prime is 672991043. The reversal of 672991042 is 240199276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×672991042³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 672990986 and 672991004.

It is not an unprimeable number, because it can be changed into a prime (672991043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226192 + ... + 229147.

It is an arithmetic number, because the mean of its divisors is an integer number (126356850).

Almost surely, 2^672991042 is an apocalyptic number.

672991042 is a deficient number, since it is larger than the sum of its proper divisors (337863758).

672991042 is a wasteful number, since it uses less digits than its factorization.

672991042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456080.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 672991042 is about 25942.0708888092. The cubic root of 672991042 is about 876.3342005489.

The spelling of 672991042 in words is "six hundred seventy-two million, nine hundred ninety-one thousand, forty-two".