212742315 has 16 divisors (see below), whose sum is σ = 378208800. Its totient is φ = 113462496.

The previous prime is 212742311. The next prime is 212742359. The reversal of 212742315 is 513247212.

212742315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212742315 - 2² = 212742311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (212742311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787800 + ... + 788069.

It is an arithmetic number, because the mean of its divisors is an integer number (23638050).

Almost surely, 2^212742315 is an apocalyptic number.

212742315 is a deficient number, since it is larger than the sum of its proper divisors (165466485).

212742315 is a wasteful number, since it uses less digits than its factorization.

212742315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575883 (or 1575877 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 212742315 is about 14585.6887050286. The cubic root of 212742315 is about 596.9683324532.

Adding to 212742315 its reverse (513247212), we get a palindrome (725989527).

It can be divided in two parts, 21 and 2742315, that added together give a square (2742336 = 1656²).

The spelling of 212742315 in words is "two hundred twelve million, seven hundred forty-two thousand, three hundred fifteen".