39642130 has 96 divisors (see below), whose sum is σ = 87531840. Its totient is φ = 12794880.

The previous prime is 39642107. The next prime is 39642137. The reversal of 39642130 is 3124693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39642137) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 921889 + ... + 921931.

It is an arithmetic number, because the mean of its divisors is an integer number (911790).

Almost surely, 2^39642130 is an apocalyptic number.

39642130 is an abundant number, since it is smaller than the sum of its proper divisors (47889710).

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

39642130 is a wasteful number, since it uses less digits than its factorization.

39642130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 39642130 is about 6296.1996474064. The cubic root of 39642130 is about 340.9722173310.

The spelling of 39642130 in words is "thirty-nine million, six hundred forty-two thousand, one hundred thirty".