451520042 has 8 divisors (see below), whose sum is σ = 677732832. Its totient is φ = 225609100.

The previous prime is 451520039. The next prime is 451520057. The reversal of 451520042 is 240025154.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71684 + ... + 77727.

It is an arithmetic number, because the mean of its divisors is an integer number (84716604).

Almost surely, 2^451520042 is an apocalyptic number.

451520042 is a deficient number, since it is larger than the sum of its proper divisors (226212790).

451520042 is a wasteful number, since it uses less digits than its factorization.

451520042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150924.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 451520042 is about 21249.0009647513. Note that the first 3 decimals coincide. The cubic root of 451520042 is about 767.1712941993.

Adding to 451520042 its reverse (240025154), we get a palindrome (691545196).

The spelling of 451520042 in words is "four hundred fifty-one million, five hundred twenty thousand, forty-two".