212103342 has 24 divisors (see below), whose sum is σ = 501335640. Its totient is φ = 64273680.

The previous prime is 212103329. The next prime is 212103343. The reversal of 212103342 is 243301212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212103343) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 535417 + ... + 535812.

It is an arithmetic number, because the mean of its divisors is an integer number (20888985).

Almost surely, 2^212103342 is an apocalyptic number.

212103342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212103342 is an abundant number, since it is smaller than the sum of its proper divisors (289232298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212103342 is a wasteful number, since it uses less digits than its factorization.

212103342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071248 (or 1071245 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 212103342 is about 14563.7681250424. The cubic root of 212103342 is about 596.3700669298.

Adding to 212103342 its reverse (243301212), we get a palindrome (455404554).

The spelling of 212103342 in words is "two hundred twelve million, one hundred three thousand, three hundred forty-two".