4259921081 has 8 divisors (see below), whose sum is σ = 4857466824. Its totient is φ = 3700926720.

The previous prime is 4259921063. The next prime is 4259921089. The reversal of 4259921081 is 1801299524.

It can be written as a sum of positive squares in 4 ways, for example, as 1080765625 + 3179155456 = 32875^2 + 56384^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4259921081 - 2¹⁰ = 4259920057 is a prime.

It is a super-2 number, since 2×4259921081² = 36293855232696417122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4259921089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9637610 + ... + 9638051.

It is an arithmetic number, because the mean of its divisors is an integer number (607183353).

Almost surely, 2^4259921081 is an apocalyptic number.

It is an amenable number.

4259921081 is a deficient number, since it is larger than the sum of its proper divisors (597545743).

4259921081 is a wasteful number, since it uses less digits than its factorization.

4259921081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19275691.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 4259921081 is about 65268.0709152645. The cubic root of 4259921081 is about 1621.0653310002.

The spelling of 4259921081 in words is "four billion, two hundred fifty-nine million, nine hundred twenty-one thousand, eighty-one".