42309708 has 48 divisors (see below), whose sum is σ = 113965824. Its totient is φ = 11966400.

The previous prime is 42309703. The next prime is 42309727. The reversal of 42309708 is 80790324.

It is a super-2 number, since 2×42309708² = 3580222782090528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42309703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5991 + ... + 10977.

It is an arithmetic number, because the mean of its divisors is an integer number (2374288).

Almost surely, 2^42309708 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 42309708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56982912).

42309708 is an abundant number, since it is smaller than the sum of its proper divisors (71656116).

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

42309708 is a wasteful number, since it uses less digits than its factorization.

42309708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102 (or 5100 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 42309708 is about 6504.5913015346. The cubic root of 42309708 is about 348.4549802662.

The spelling of 42309708 in words is "forty-two million, three hundred nine thousand, seven hundred eight".