442420099 has 16 divisors (see below), whose sum is σ = 491256576. Its totient is φ = 395063200.

The previous prime is 442420081. The next prime is 442420117. The reversal of 442420099 is 990024244.

It is an interprime number because it is at equal distance from previous prime (442420081) and next prime (442420117).

It is a cyclic number.

It is not a de Polignac number, because 442420099 - 2⁵ = 442420067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442420009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246684 + ... + 248470.

It is an arithmetic number, because the mean of its divisors is an integer number (30703536).

Almost surely, 2^442420099 is an apocalyptic number.

442420099 is a deficient number, since it is larger than the sum of its proper divisors (48836477).

442420099 is a wasteful number, since it uses less digits than its factorization.

442420099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 442420099 is about 21033.7847046127. The cubic root of 442420099 is about 761.9824162443.

The spelling of 442420099 in words is "four hundred forty-two million, four hundred twenty thousand, ninety-nine".