442142117 has 2 divisors, whose sum is σ = 442142118. Its totient is φ = 442142116.

The previous prime is 442142111. The next prime is 442142143. The reversal of 442142117 is 711241244.

It is an a-pointer prime, because the next prime (442142143) can be obtained adding 442142117 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392594596 + 49547521 = 19814^2 + 7039^2 .

It is a cyclic number.

It is not a de Polignac number, because 442142117 - 2⁶ = 442142053 is a prime.

It is a super-3 number, since 3×442142117³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442142111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221071058 + 221071059.

It is an arithmetic number, because the mean of its divisors is an integer number (221071059).

Almost surely, 2^442142117 is an apocalyptic number.

It is an amenable number.

442142117 is a deficient number, since it is larger than the sum of its proper divisors (1).

442142117 is an equidigital number, since it uses as much as digits as its factorization.

442142117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 26.

The square root of 442142117 is about 21027.1756781552. The cubic root of 442142117 is about 761.8227928643.

The spelling of 442142117 in words is "four hundred forty-two million, one hundred forty-two thousand, one hundred seventeen".