840195051 has 8 divisors (see below), whose sum is σ = 1121363520. Its totient is φ = 559578312.

The previous prime is 840195049. The next prime is 840195053. The reversal of 840195051 is 150591048.

It is an interprime number because it is at equal distance from previous prime (840195049) and next prime (840195053).

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

It is not a de Polignac number, because 840195051 - 2¹ = 840195049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840195053) 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, 134365 + ... + 140478.

It is an arithmetic number, because the mean of its divisors is an integer number (140170440).

Almost surely, 2^840195051 is an apocalyptic number.

840195051 is a deficient number, since it is larger than the sum of its proper divisors (281168469).

840195051 is a wasteful number, since it uses less digits than its factorization.

840195051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275865.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 840195051 is about 28986.1182464986. The cubic root of 840195051 is about 943.6118214374.

The spelling of 840195051 in words is "eight hundred forty million, one hundred ninety-five thousand, fifty-one".