442343511 has 10 divisors (see below), whose sum is σ = 660784872. Its totient is φ = 294895620.

The previous prime is 442343471. The next prime is 442343533. The reversal of 442343511 is 115343244.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-442343511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442343911) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2730435 + ... + 2730596.

Almost surely, 2^442343511 is an apocalyptic number.

442343511 is a deficient number, since it is larger than the sum of its proper divisors (218441361).

442343511 is an equidigital number, since it uses as much as digits as its factorization.

442343511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5461043 (or 5461034 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 442343511 is about 21031.9640309696. The cubic root of 442343511 is about 761.9384444045.

Adding to 442343511 its reverse (115343244), we get a palindrome (557686755).

The spelling of 442343511 in words is "four hundred forty-two million, three hundred forty-three thousand, five hundred eleven".