340342040 has 128 divisors (see below), whose sum is σ = 865935360. Its totient is φ = 119691264.

The previous prime is 340342027. The next prime is 340342043. The reversal of 340342040 is 40243043.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340342043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 734849 + ... + 735311.

It is an arithmetic number, because the mean of its divisors is an integer number (6765120).

Almost surely, 2^340342040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340342040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432967680).

340342040 is an abundant number, since it is smaller than the sum of its proper divisors (525593320).

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

340342040 is a wasteful number, since it uses less digits than its factorization.

340342040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 340342040 is about 18448.3614448547. The cubic root of 340342040 is about 698.1871732256.

Adding to 340342040 its reverse (40243043), we get a palindrome (380585083).

The spelling of 340342040 in words is "three hundred forty million, three hundred forty-two thousand, forty".