212146539 has 16 divisors (see below), whose sum is σ = 311313024. Its totient is φ = 127433600.

The previous prime is 212146523. The next prime is 212146559. The reversal of 212146539 is 935641212.

212146539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212146539 - 2⁴ = 212146523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (212146559) 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, 24717 + ... + 32174.

It is an arithmetic number, because the mean of its divisors is an integer number (19457064).

Almost surely, 2^212146539 is an apocalyptic number.

212146539 is a deficient number, since it is larger than the sum of its proper divisors (99166485).

212146539 is a wasteful number, since it uses less digits than its factorization.

212146539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57018.

The product of its digits is 12960, while the sum is 33.

The square root of 212146539 is about 14565.2510791953. The cubic root of 212146539 is about 596.4105497888.

The spelling of 212146539 in words is "two hundred twelve million, one hundred forty-six thousand, five hundred thirty-nine".