213466442 has 24 divisors (see below), whose sum is σ = 374401764. Its totient is φ = 91012992.

The previous prime is 213466439. The next prime is 213466447. The reversal of 213466442 is 244664312.

It can be written as a sum of positive squares in 2 ways, for example, as 208542481 + 4923961 = 14441^2 + 2219^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213466399 and 213466408.

It is not an unprimeable number, because it can be changed into a prime (213466447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13778 + ... + 24834.

Almost surely, 2^213466442 is an apocalyptic number.

213466442 is a deficient number, since it is larger than the sum of its proper divisors (160935322).

213466442 is a wasteful number, since it uses less digits than its factorization.

213466442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11270 (or 11263 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

The square root of 213466442 is about 14610.4908199554. The cubic root of 213466442 is about 597.6448807471.

The spelling of 213466442 in words is "two hundred thirteen million, four hundred sixty-six thousand, four hundred forty-two".