840312370 has 8 divisors (see below), whose sum is σ = 1512562284. Its totient is φ = 336124944.

The previous prime is 840312367. The next prime is 840312371. The reversal of 840312370 is 73213048.

It can be written as a sum of positive squares in 2 ways, for example, as 805254129 + 35058241 = 28377^2 + 5921^2 .

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

It is a super-2 number, since 2×840312370² = 1412249758350033800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (840312371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42015609 + ... + 42015628.

Almost surely, 2^840312370 is an apocalyptic number.

840312370 is a deficient number, since it is larger than the sum of its proper divisors (672249914).

840312370 is a wasteful number, since it uses less digits than its factorization.

840312370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84031244.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 840312370 is about 28988.1418859505. The cubic root of 840312370 is about 943.6557391932.

The spelling of 840312370 in words is "eight hundred forty million, three hundred twelve thousand, three hundred seventy".