212340156 has 48 divisors (see below), whose sum is σ = 567114240. Its totient is φ = 60575040.

The previous prime is 212340119. The next prime is 212340157. The reversal of 212340156 is 651043212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212340157) 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 15 ways as a sum of consecutive naturals, for example, 67425 + ... + 70503.

It is an arithmetic number, because the mean of its divisors is an integer number (11814880).

Almost surely, 2^212340156 is an apocalyptic number.

It is an amenable number.

212340156 is an abundant number, since it is smaller than the sum of its proper divisors (354774084).

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

212340156 is a wasteful number, since it uses less digits than its factorization.

212340156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3914 (or 3912 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 212340156 is about 14571.8961017432. The cubic root of 212340156 is about 596.5919340182.

Adding to 212340156 its reverse (651043212), we get a palindrome (863383368).

The spelling of 212340156 in words is "two hundred twelve million, three hundred forty thousand, one hundred fifty-six".