212147435 has 4 divisors (see below), whose sum is σ = 254576928. Its totient is φ = 169717944.

The previous prime is 212147401. The next prime is 212147449. The reversal of 212147435 is 534741212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212147435 - 2⁶ = 212147371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212147398 and 212147407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21214739 + ... + 21214748.

It is an arithmetic number, because the mean of its divisors is an integer number (63644232).

Almost surely, 2^212147435 is an apocalyptic number.

212147435 is a deficient number, since it is larger than the sum of its proper divisors (42429493).

212147435 is an equidigital number, since it uses as much as digits as its factorization.

212147435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42429492.

The product of its digits is 6720, while the sum is 29.

The square root of 212147435 is about 14565.2818373006. The cubic root of 212147435 is about 596.4113894335.

Adding to 212147435 its reverse (534741212), we get a palindrome (746888647).

The spelling of 212147435 in words is "two hundred twelve million, one hundred forty-seven thousand, four hundred thirty-five".