212742895 has 8 divisors (see below), whose sum is σ = 257770656. Its totient is φ = 168541536.

The previous prime is 212742853. The next prime is 212742899. The reversal of 212742895 is 598247212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212742895 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212742899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206032 + ... + 207061.

It is an arithmetic number, because the mean of its divisors is an integer number (32221332).

Almost surely, 2^212742895 is an apocalyptic number.

212742895 is a deficient number, since it is larger than the sum of its proper divisors (45027761).

212742895 is a wasteful number, since it uses less digits than its factorization.

212742895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413201.

The product of its digits is 80640, while the sum is 40.

The square root of 212742895 is about 14585.7085875181. The cubic root of 212742895 is about 596.9688749582.

The spelling of 212742895 in words is "two hundred twelve million, seven hundred forty-two thousand, eight hundred ninety-five".