442451345 has 32 divisors (see below), whose sum is σ = 635351040. Its totient is φ = 289206720.

The previous prime is 442451327. The next prime is 442451351. The reversal of 442451345 is 543154244.

It is not a de Polignac number, because 442451345 - 2⁶ = 442451281 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288230 + ... + 289760.

It is an arithmetic number, because the mean of its divisors is an integer number (19854720).

Almost surely, 2^442451345 is an apocalyptic number.

It is an amenable number.

442451345 is a deficient number, since it is larger than the sum of its proper divisors (192899695).

442451345 is a wasteful number, since it uses less digits than its factorization.

442451345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925.

The product of its digits is 38400, while the sum is 32.

The square root of 442451345 is about 21034.5274489350. The cubic root of 442451345 is about 762.0003542042. Note that the first 3 decimals are identical.

The spelling of 442451345 in words is "four hundred forty-two million, four hundred fifty-one thousand, three hundred forty-five".