39542081 has 16 divisors (see below), whose sum is σ = 42674688. Its totient is φ = 36566400.

The previous prime is 39542071. The next prime is 39542089. The reversal of 39542081 is 18024593.

39542081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 39542081 - 2¹⁰ = 39541057 is a prime.

It is a super-2 number, since 2×39542081² = 3127152339621122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39542089) 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 15 ways as a sum of consecutive naturals, for example, 67070 + ... + 67656.

It is an arithmetic number, because the mean of its divisors is an integer number (2667168).

Almost surely, 2^39542081 is an apocalyptic number.

39542081 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

39542081 is a deficient number, since it is larger than the sum of its proper divisors (3132607).

39542081 is a wasteful number, since it uses less digits than its factorization.

39542081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 39542081 is about 6288.2494384367. The cubic root of 39542081 is about 340.6851265629.

The spelling of 39542081 in words is "thirty-nine million, five hundred forty-two thousand, eighty-one".