442212511 has 16 divisors (see below), whose sum is σ = 490109760. Its totient is φ = 396391680.

The previous prime is 442212497. The next prime is 442212523. The reversal of 442212511 is 115212244.

It is a cyclic number.

It is not a de Polignac number, because 442212511 - 2⁹ = 442211999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442212541) 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, 120246 + ... + 123868.

It is an arithmetic number, because the mean of its divisors is an integer number (30631860).

Almost surely, 2^442212511 is an apocalyptic number.

442212511 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

442212511 is a deficient number, since it is larger than the sum of its proper divisors (47897249).

442212511 is a wasteful number, since it uses less digits than its factorization.

442212511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906.

The product of its digits is 640, while the sum is 22.

The square root of 442212511 is about 21028.8494930179. The cubic root of 442212511 is about 761.8632209724.

Adding to 442212511 its reverse (115212244), we get a palindrome (557424755).

The spelling of 442212511 in words is "four hundred forty-two million, two hundred twelve thousand, five hundred eleven".