213766242 has 16 divisors (see below), whose sum is σ = 439087872. Its totient is φ = 69329520.

The previous prime is 213766237. The next prime is 213766253. The reversal of 213766242 is 242667312.

213766242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481234 + ... + 481677.

It is an arithmetic number, because the mean of its divisors is an integer number (27442992).

Almost surely, 2^213766242 is an apocalyptic number.

213766242 is an abundant number, since it is smaller than the sum of its proper divisors (225321630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213766242 is a wasteful number, since it uses less digits than its factorization.

213766242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962953.

The product of its digits is 24192, while the sum is 33.

The square root of 213766242 is about 14620.7469713418. The cubic root of 213766242 is about 597.9245345723.

The spelling of 213766242 in words is "two hundred thirteen million, seven hundred sixty-six thousand, two hundred forty-two".