39801042 has 18 divisors (see below), whose sum is σ = 86293623. Its totient is φ = 13258092.

The previous prime is 39801031. The next prime is 39801043. The reversal of 39801042 is 24010893.

39801042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 19900521 + 19900521 = 4461^2 + 4461^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4461.

It is a junction number, because it is equal to n+sod(n) for n = 39800997 and 39801015.

It is not an unprimeable number, because it can be changed into a prime (39801043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26023 + ... + 27509.

Almost surely, 2^39801042 is an apocalyptic number.

39801042 is an abundant number, since it is smaller than the sum of its proper divisors (46492581).

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

39801042 is an equidigital number, since it uses as much as digits as its factorization.

39801042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982 (or 1492 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 39801042 is about 6308.8067017464. The cubic root of 39801042 is about 341.4272242913.

The spelling of 39801042 in words is "thirty-nine million, eight hundred one thousand, forty-two".