213545242 has 8 divisors (see below), whose sum is σ = 321944436. Its totient is φ = 106230432.

The previous prime is 213545231. The next prime is 213545243. The reversal of 213545242 is 242545312.

213545242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 212547241 + 998001 = 14579^2 + 999^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 213545242.

It is not an unprimeable number, because it can be changed into a prime (213545243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270603 + ... + 271390.

Almost surely, 2^213545242 is an apocalyptic number.

213545242 is a deficient number, since it is larger than the sum of its proper divisors (108399194).

213545242 is a wasteful number, since it uses less digits than its factorization.

213545242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542192.

The product of its digits is 9600, while the sum is 28.

The square root of 213545242 is about 14613.1872635644. The cubic root of 213545242 is about 597.7184108415.

The spelling of 213545242 in words is "two hundred thirteen million, five hundred forty-five thousand, two hundred forty-two".