1043427521 has 2 divisors, whose sum is σ = 1043427522. Its totient is φ = 1043427520.

The previous prime is 1043427487. The next prime is 1043427527. The reversal of 1043427521 is 1257243401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 583753921 + 459673600 = 24161^2 + 21440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1043427521 - 2⁶ = 1043427457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1043427527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521713760 + 521713761.

It is an arithmetic number, because the mean of its divisors is an integer number (521713761).

Almost surely, 2^1043427521 is an apocalyptic number.

It is an amenable number.

1043427521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043427521 is an equidigital number, since it uses as much as digits as its factorization.

1043427521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1043427521 is about 32302.1287379021. The cubic root of 1043427521 is about 1014.2712042048.

The spelling of 1043427521 in words is "one billion, forty-three million, four hundred twenty-seven thousand, five hundred twenty-one".