3085742921 has 2 divisors, whose sum is σ = 3085742922. Its totient is φ = 3085742920.

The previous prime is 3085742903. The next prime is 3085742929. The reversal of 3085742921 is 1292475803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1672810000 + 1412932921 = 40900^2 + 37589^2 .

It is a cyclic number.

It is not a de Polignac number, because 3085742921 - 2¹⁴ = 3085726537 is a prime.

It is a super-2 number, since 2×3085742921² = 19043618749003224482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3085742929) 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 as a sum of consecutive naturals, namely, 1542871460 + 1542871461.

It is an arithmetic number, because the mean of its divisors is an integer number (1542871461).

Almost surely, 2^3085742921 is an apocalyptic number.

It is an amenable number.

3085742921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3085742921 is an equidigital number, since it uses as much as digits as its factorization.

3085742921 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3085742921 is about 55549.4637327850. The cubic root of 3085742921 is about 1455.8610053346.

The spelling of 3085742921 in words is "three billion, eighty-five million, seven hundred forty-two thousand, nine hundred twenty-one".