840054057 has 8 divisors (see below), whose sum is σ = 1120234176. Its totient is φ = 559954992.

The previous prime is 840054041. The next prime is 840054071. The reversal of 840054057 is 750450048.

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

It is not a de Polignac number, because 840054057 - 2⁴ = 840054041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840054097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10668 + ... + 42354.

It is an arithmetic number, because the mean of its divisors is an integer number (140029272).

Almost surely, 2^840054057 is an apocalyptic number.

It is an amenable number.

840054057 is a deficient number, since it is larger than the sum of its proper divisors (280180119).

840054057 is a wasteful number, since it uses less digits than its factorization.

840054057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40527.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 840054057 is about 28983.6860492243. The cubic root of 840054057 is about 943.5590356596.

The spelling of 840054057 in words is "eight hundred forty million, fifty-four thousand, fifty-seven".