212742310 has 16 divisors (see below), whose sum is σ = 417748752. Its totient is φ = 77360800.

The previous prime is 212742293. The next prime is 212742311. The reversal of 212742310 is 13247212.

It is a super-2 number, since 2×212742310² = 90518580928272200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212742311) 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 7 ways as a sum of consecutive naturals, for example, 966901 + ... + 967120.

It is an arithmetic number, because the mean of its divisors is an integer number (26109297).

Almost surely, 2^212742310 is an apocalyptic number.

212742310 is a deficient number, since it is larger than the sum of its proper divisors (205006442).

212742310 is a wasteful number, since it uses less digits than its factorization.

212742310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934039.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 212742310 is about 14585.6885336277. The cubic root of 212742310 is about 596.9683277764.

Adding to 212742310 its reverse (13247212), we get a palindrome (225989522).

The spelling of 212742310 in words is "two hundred twelve million, seven hundred forty-two thousand, three hundred ten".