840286154 has 8 divisors (see below), whose sum is σ = 1272666720. Its totient is φ = 416063916.

The previous prime is 840286141. The next prime is 840286157. The reversal of 840286154 is 451682048.

It is a happy number.

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

It is a super-2 number, since 2×840286154² = 1412161641208223432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (840286157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2039324 + ... + 2039735.

It is an arithmetic number, because the mean of its divisors is an integer number (159083340).

Almost surely, 2^840286154 is an apocalyptic number.

840286154 is a deficient number, since it is larger than the sum of its proper divisors (432380566).

840286154 is a wasteful number, since it uses less digits than its factorization.

840286154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079164.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 840286154 is about 28987.6896975251. The cubic root of 840286154 is about 943.6459257250.

The spelling of 840286154 in words is "eight hundred forty million, two hundred eighty-six thousand, one hundred fifty-four".