212942655 has 16 divisors (see below), whose sum is σ = 378564960. Its totient is φ = 113569344.

The previous prime is 212942651. The next prime is 212942669. The reversal of 212942655 is 556249212.

It is not a de Polignac number, because 212942655 - 2² = 212942651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212942651) 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, 788542 + ... + 788811.

It is an arithmetic number, because the mean of its divisors is an integer number (23660310).

Almost surely, 2^212942655 is an apocalyptic number.

212942655 is a deficient number, since it is larger than the sum of its proper divisors (165622305).

212942655 is a wasteful number, since it uses less digits than its factorization.

212942655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577367 (or 1577361 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 212942655 is about 14592.5547797498. The cubic root of 212942655 is about 597.1556625476.

The spelling of 212942655 in words is "two hundred twelve million, nine hundred forty-two thousand, six hundred fifty-five".