342138212 has 24 divisors (see below), whose sum is σ = 647153976. Its totient is φ = 157333248.

The previous prime is 342138197. The next prime is 342138257. The reversal of 342138212 is 212831243.

It can be written as a sum of positive squares in 4 ways, for example, as 5635876 + 336502336 = 2374^2 + 18344^2 .

It is a super-2 number, since 2×342138212² = 234117112221113888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2528 + ... + 26280.

It is an arithmetic number, because the mean of its divisors is an integer number (26964749).

Almost surely, 2^342138212 is an apocalyptic number.

It is an amenable number.

342138212 is a deficient number, since it is larger than the sum of its proper divisors (305015764).

342138212 is a wasteful number, since it uses less digits than its factorization.

342138212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24047 (or 24045 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 342138212 is about 18496.9784559533. The cubic root of 342138212 is about 699.4132579884.

Adding to 342138212 its reverse (212831243), we get a palindrome (554969455).

The spelling of 342138212 in words is "three hundred forty-two million, one hundred thirty-eight thousand, two hundred twelve".