340123240 has 32 divisors (see below), whose sum is σ = 785963880. Its totient is φ = 132371712.

The previous prime is 340123229. The next prime is 340123247. The reversal of 340123240 is 42321043.

It can be written as a sum of positive squares in 4 ways, for example, as 340107364 + 15876 = 18442^2 + 126^2 .

It is not an unprimeable number, because it can be changed into a prime (340123247) 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, 113427 + ... + 116386.

Almost surely, 2^340123240 is an apocalyptic number.

It is an amenable number.

340123240 is an abundant number, since it is smaller than the sum of its proper divisors (445840640).

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

340123240 is a wasteful number, since it uses less digits than its factorization.

340123240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229861 (or 229857 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 340123240 is about 18442.4304255160. The cubic root of 340123240 is about 698.0375236735.

Adding to 340123240 its reverse (42321043), we get a palindrome (382444283).

The spelling of 340123240 in words is "three hundred forty million, one hundred twenty-three thousand, two hundred forty".