840202126 has 16 divisors (see below), whose sum is σ = 1283846400. Its totient is φ = 412277688.

The previous prime is 840202117. The next prime is 840202151. The reversal of 840202126 is 621202048.

It is a happy number.

840202126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×840202126² = 1411879225069839752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 840202126.

It is a congruent number.

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, 67291 + ... + 78793.

It is an arithmetic number, because the mean of its divisors is an integer number (80240400).

Almost surely, 2^840202126 is an apocalyptic number.

840202126 is a deficient number, since it is larger than the sum of its proper divisors (443644274).

840202126 is a wasteful number, since it uses less digits than its factorization.

840202126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12183.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 840202126 is about 28986.2402874191. The cubic root of 840202126 is about 943.6144700426.

The spelling of 840202126 in words is "eight hundred forty million, two hundred two thousand, one hundred twenty-six".