340004742 has 64 divisors (see below), whose sum is σ = 857433600. Its totient is φ = 87310080.

The previous prime is 340004723. The next prime is 340004761. The reversal of 340004742 is 247400043.

It is an interprime number because it is at equal distance from previous prime (340004723) and next prime (340004761).

It is a congruent number.

It is an unprimeable number.

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, 36984 + ... + 45252.

It is an arithmetic number, because the mean of its divisors is an integer number (13397400).

Almost surely, 2^340004742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340004742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428716800).

340004742 is an abundant number, since it is smaller than the sum of its proper divisors (517428858).

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

340004742 is a wasteful number, since it uses less digits than its factorization.

340004742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8381.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 340004742 is about 18439.2174996663. The cubic root of 340004742 is about 697.9564494739.

Adding to 340004742 its reverse (247400043), we get a palindrome (587404785).

The spelling of 340004742 in words is "three hundred forty million, four thousand, seven hundred forty-two".