42708340 has 12 divisors (see below), whose sum is σ = 89687556. Its totient is φ = 17083328.

The previous prime is 42708319. The next prime is 42708343. The reversal of 42708340 is 4380724.

It can be written as a sum of positive squares in 2 ways, for example, as 21141604 + 21566736 = 4598^2 + 4644^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42708299 and 42708308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42708343) 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, 1067689 + ... + 1067728.

It is an arithmetic number, because the mean of its divisors is an integer number (7473963).

Almost surely, 2^42708340 is an apocalyptic number.

It is an amenable number.

42708340 is an abundant number, since it is smaller than the sum of its proper divisors (46979216).

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

42708340 is a wasteful number, since it uses less digits than its factorization.

42708340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135426 (or 2135424 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 42708340 is about 6535.1618189606. The cubic root of 42708340 is about 349.5459145315.

The spelling of 42708340 in words is "forty-two million, seven hundred eight thousand, three hundred forty".