1356241123 has 2 divisors, whose sum is σ = 1356241124. Its totient is φ = 1356241122.

The previous prime is 1356241093. The next prime is 1356241127. The reversal of 1356241123 is 3211426531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1356241123 is a prime.

It is a super-2 number, since 2×1356241123² = 3678779967432602258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1356241091 and 1356241100.

It is not a weakly prime, because it can be changed into another prime (1356241127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678120561 + 678120562.

It is an arithmetic number, because the mean of its divisors is an integer number (678120562).

Almost surely, 2^1356241123 is an apocalyptic number.

1356241123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356241123 is an equidigital number, since it uses as much as digits as its factorization.

1356241123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 1356241123 is about 36827.1791344382. The cubic root of 1356241123 is about 1106.9099794139.

Adding to 1356241123 its reverse (3211426531), we get a palindrome (4567667654).

The spelling of 1356241123 in words is "one billion, three hundred fifty-six million, two hundred forty-one thousand, one hundred twenty-three".