1024072921 has 2 divisors, whose sum is σ = 1024072922. Its totient is φ = 1024072920.

The previous prime is 1024072913. The next prime is 1024072927. The reversal of 1024072921 is 1292704201.

1024072921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 879952896 + 144120025 = 29664^2 + 12005^2 .

It is a cyclic number.

It is not a de Polignac number, because 1024072921 - 2³ = 1024072913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1024072921.

It is not a weakly prime, because it can be changed into another prime (1024072927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512036460 + 512036461.

It is an arithmetic number, because the mean of its divisors is an integer number (512036461).

Almost surely, 2^1024072921 is an apocalyptic number.

It is an amenable number.

1024072921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1024072921 is an equidigital number, since it uses as much as digits as its factorization.

1024072921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1024072921 is about 32001.1393703412. The cubic root of 1024072921 is about 1007.9607650519.

The spelling of 1024072921 in words is "one billion, twenty-four million, seventy-two thousand, nine hundred twenty-one".