342447819 has 12 divisors (see below), whose sum is σ = 531143784. Its totient is φ = 195684384.

The previous prime is 342447817. The next prime is 342447821. The reversal of 342447819 is 918744243.

It is an interprime number because it is at equal distance from previous prime (342447817) and next prime (342447821).

It is not a de Polignac number, because 342447819 - 2¹ = 342447817 is a prime.

It is a super-2 number, since 2×342447819² = 234541017475713522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (342447817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1164642 + ... + 1164935.

It is an arithmetic number, because the mean of its divisors is an integer number (44261982).

Almost surely, 2^342447819 is an apocalyptic number.

342447819 is a deficient number, since it is larger than the sum of its proper divisors (188695965).

342447819 is a wasteful number, since it uses less digits than its factorization.

342447819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329594 (or 2329587 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 342447819 is about 18505.3456871251. The cubic root of 342447819 is about 699.6241649142.

The spelling of 342447819 in words is "three hundred forty-two million, four hundred forty-seven thousand, eight hundred nineteen".