4239572081 has 16 divisors (see below), whose sum is σ = 4555218384. Its totient is φ = 3931705344.

The previous prime is 4239572063. The next prime is 4239572107. The reversal of 4239572081 is 1802759324.

It can be written as a sum of positive squares in 8 ways, for example, as 43771456 + 4195800625 = 6616^2 + 64775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4239572081 is a prime.

It is a super-2 number, since 2×4239572081² = 35947942859989341122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4239572881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325955 + ... + 338711.

It is an arithmetic number, because the mean of its divisors is an integer number (284701149).

Almost surely, 2^4239572081 is an apocalyptic number.

It is an amenable number.

4239572081 is a deficient number, since it is larger than the sum of its proper divisors (315646303).

4239572081 is a wasteful number, since it uses less digits than its factorization.

4239572081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13060.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 4239572081 is about 65111.9964445877. The cubic root of 4239572081 is about 1618.4800152661.

The spelling of 4239572081 in words is "four billion, two hundred thirty-nine million, five hundred seventy-two thousand, eighty-one".