213535642 has 16 divisors (see below), whose sum is σ = 348789600. Its totient is φ = 97660080.

The previous prime is 213535639. The next prime is 213535649. The reversal of 213535642 is 246535312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (213535649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95784 + ... + 97987.

It is an arithmetic number, because the mean of its divisors is an integer number (21799350).

Almost surely, 2^213535642 is an apocalyptic number.

213535642 is a deficient number, since it is larger than the sum of its proper divisors (135253958).

213535642 is a wasteful number, since it uses less digits than its factorization.

213535642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193821.

The product of its digits is 21600, while the sum is 31.

The square root of 213535642 is about 14612.8587894361. The cubic root of 213535642 is about 597.7094538282.

The spelling of 213535642 in words is "two hundred thirteen million, five hundred thirty-five thousand, six hundred forty-two".