212056146 has 12 divisors (see below), whose sum is σ = 459455022. Its totient is φ = 70685376.

The previous prime is 212056129. The next prime is 212056157. The reversal of 212056146 is 641650212.

212056146 is a `hidden beast` number, since 21 + 20 + 5 + 614 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 120758121 + 91298025 = 10989^2 + 9555^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 5890431 + ... + 5890466.

Almost surely, 2^212056146 is an apocalyptic number.

212056146 is an abundant number, since it is smaller than the sum of its proper divisors (247398876).

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

212056146 is a wasteful number, since it uses less digits than its factorization.

212056146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11780905 (or 11780902 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 212056146 is about 14562.1477124770. The cubic root of 212056146 is about 596.3258300508.

The spelling of 212056146 in words is "two hundred twelve million, fifty-six thousand, one hundred forty-six".