1026240121 has 2 divisors, whose sum is σ = 1026240122. Its totient is φ = 1026240120.

The previous prime is 1026240119. The next prime is 1026240143. The reversal of 1026240121 is 1210426201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1013530896 + 12709225 = 31836^2 + 3565^2 .

It is an emirp because it is prime and its reverse (1210426201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1026240121 - 2¹ = 1026240119 is a prime.

Together with 1026240119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1026240161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513120060 + 513120061.

It is an arithmetic number, because the mean of its divisors is an integer number (513120061).

Almost surely, 2^1026240121 is an apocalyptic number.

It is an amenable number.

1026240121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026240121 is an equidigital number, since it uses as much as digits as its factorization.

1026240121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1026240121 is about 32034.9827688419. The cubic root of 1026240121 is about 1008.6712982509.

Adding to 1026240121 its reverse (1210426201), we get a palindrome (2236666322).

The spelling of 1026240121 in words is "one billion, twenty-six million, two hundred forty thousand, one hundred twenty-one".