840774234 has 8 divisors (see below), whose sum is σ = 1681548480. Its totient is φ = 280258076.

The previous prime is 840774229. The next prime is 840774241. The reversal of 840774234 is 432477048.

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

840774234 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 840774192 and 840774201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70064514 + ... + 70064525.

It is an arithmetic number, because the mean of its divisors is an integer number (210193560).

Almost surely, 2^840774234 is an apocalyptic number.

840774234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

840774234 is a wasteful number, since it uses less digits than its factorization.

840774234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140129044.

The product of its (nonzero) digits is 150528, while the sum is 39.

The square root of 840774234 is about 28996.1072214875. The cubic root of 840774234 is about 943.8285958607.

The spelling of 840774234 in words is "eight hundred forty million, seven hundred seventy-four thousand, two hundred thirty-four".