16042340 has 24 divisors (see below), whose sum is σ = 33764472. Its totient is φ = 6402560.

The previous prime is 16042337. The next prime is 16042343. The reversal of 16042340 is 4324061.

It is a happy number.

16042340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16042337) and next prime (16042343).

It can be written as a sum of positive squares in 4 ways, for example, as 3268864 + 12773476 = 1808^2 + 3574^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16042343) 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, 15932 + ... + 16908.

It is an arithmetic number, because the mean of its divisors is an integer number (1406853).

Almost surely, 2^16042340 is an apocalyptic number.

16042340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16042340 is an abundant number, since it is smaller than the sum of its proper divisors (17722132).

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

16042340 is a wasteful number, since it uses less digits than its factorization.

16042340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807 (or 1805 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 16042340 is about 4005.2890033055. The cubic root of 16042340 is about 252.2062852770.

The spelling of 16042340 in words is "sixteen million, forty-two thousand, three hundred forty".