212540349 has 8 divisors (see below), whose sum is σ = 323871040. Its totient is φ = 121451616.

The previous prime is 212540347. The next prime is 212540389. The reversal of 212540349 is 943045212.

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

It is not a de Polignac number, because 212540349 - 2¹ = 212540347 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 (212540347) 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, 5060464 + ... + 5060505.

It is an arithmetic number, because the mean of its divisors is an integer number (40483880).

Almost surely, 2^212540349 is an apocalyptic number.

It is an amenable number.

212540349 is a deficient number, since it is larger than the sum of its proper divisors (111330691).

212540349 is a wasteful number, since it uses less digits than its factorization.

212540349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10120979.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 212540349 is about 14578.7636307061. The cubic root of 212540349 is about 596.7793628701.

The spelling of 212540349 in words is "two hundred twelve million, five hundred forty thousand, three hundred forty-nine".