442055451 has 4 divisors (see below), whose sum is σ = 589407272. Its totient is φ = 294703632.

The previous prime is 442055389. The next prime is 442055461. The reversal of 442055451 is 154550244.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 442055451 - 2⁹ = 442054939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442055461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73675906 + ... + 73675911.

It is an arithmetic number, because the mean of its divisors is an integer number (147351818).

Almost surely, 2^442055451 is an apocalyptic number.

442055451 is a deficient number, since it is larger than the sum of its proper divisors (147351821).

442055451 is a wasteful number, since it uses less digits than its factorization.

442055451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147351820.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 442055451 is about 21025.1147678199. The cubic root of 442055451 is about 761.7730136599.

The spelling of 442055451 in words is "four hundred forty-two million, fifty-five thousand, four hundred fifty-one".