39842712 has 128 divisors (see below), whose sum is σ = 136281600. Its totient is φ = 10502784.

The previous prime is 39842711. The next prime is 39842717. The reversal of 39842712 is 21724893.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39842711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18643 + ... + 20669.

It is an arithmetic number, because the mean of its divisors is an integer number (1064700).

Almost surely, 2^39842712 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 39842712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68140800).

39842712 is an abundant number, since it is smaller than the sum of its proper divisors (96438888).

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

39842712 is a wasteful number, since it uses less digits than its factorization.

39842712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062 (or 2052 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 39842712 is about 6312.1083640888. The cubic root of 39842712 is about 341.5463359987.

The spelling of 39842712 in words is "thirty-nine million, eight hundred forty-two thousand, seven hundred twelve".