840211052 has 6 divisors (see below), whose sum is σ = 1470369348. Its totient is φ = 420105524.

The previous prime is 840211049. The next prime is 840211061. The reversal of 840211052 is 250112048.

It is a super-2 number, since 2×840211052² = 1411909223805893408, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105026378 + ... + 105026385.

It is an arithmetic number, because the mean of its divisors is an integer number (245061558).

Almost surely, 2^840211052 is an apocalyptic number.

It is an amenable number.

840211052 is a deficient number, since it is larger than the sum of its proper divisors (630158296).

840211052 is a wasteful number, since it uses less digits than its factorization.

840211052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210052767 (or 210052765 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 840211052 is about 28986.3942566163. The cubic root of 840211052 is about 943.6178115691.

The spelling of 840211052 in words is "eight hundred forty million, two hundred eleven thousand, fifty-two".