1021240523 has 2 divisors, whose sum is σ = 1021240524. Its totient is φ = 1021240522.

The previous prime is 1021240501. The next prime is 1021240529. The reversal of 1021240523 is 3250421201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021240523 - 2²⁴ = 1004463307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021240495 and 1021240504.

It is not a weakly prime, because it can be changed into another prime (1021240529) 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, 510620261 + 510620262.

It is an arithmetic number, because the mean of its divisors is an integer number (510620262).

Almost surely, 2^1021240523 is an apocalyptic number.

1021240523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021240523 is an equidigital number, since it uses as much as digits as its factorization.

1021240523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1021240523 is about 31956.8540848438. The cubic root of 1021240523 is about 1007.0306287520.

Adding to 1021240523 its reverse (3250421201), we get a palindrome (4271661724).

The spelling of 1021240523 in words is "one billion, twenty-one million, two hundred forty thousand, five hundred twenty-three".