1358421121 has 2 divisors, whose sum is σ = 1358421122. Its totient is φ = 1358421120.

The previous prime is 1358421079. The next prime is 1358421149. The reversal of 1358421121 is 1211248531.

It is an a-pointer prime, because the next prime (1358421149) can be obtained adding 1358421121 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1279850625 + 78570496 = 35775^2 + 8864^2 .

It is an emirp because it is prime and its reverse (1211248531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1358421121 - 2⁷ = 1358420993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1358421121.

It is not a weakly prime, because it can be changed into another prime (1358421191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 679210560 + 679210561.

It is an arithmetic number, because the mean of its divisors is an integer number (679210561).

Almost surely, 2^1358421121 is an apocalyptic number.

It is an amenable number.

1358421121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1358421121 is an equidigital number, since it uses as much as digits as its factorization.

1358421121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 28.

The square root of 1358421121 is about 36856.7649285718. The cubic root of 1358421121 is about 1107.5027377736.

Adding to 1358421121 its reverse (1211248531), we get a palindrome (2569669652).

The spelling of 1358421121 in words is "one billion, three hundred fifty-eight million, four hundred twenty-one thousand, one hundred twenty-one".