1361245123 has 24 divisors (see below), whose sum is σ = 1663400960. Its totient is φ = 1090061280.

The previous prime is 1361245117. The next prime is 1361245159. The reversal of 1361245123 is 3215421631.

It is not a de Polignac number, because 1361245123 - 2⁵ = 1361245091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1361245091 and 1361245100.

It is not an unprimeable number, because it can be changed into a prime (1361245103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178768 + ... + 186226.

Almost surely, 2^1361245123 is an apocalyptic number.

1361245123 is a deficient number, since it is larger than the sum of its proper divisors (302155837).

1361245123 is an equidigital number, since it uses as much as digits as its factorization.

1361245123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555 (or 7526 counting only the distinct ones).

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

The square root of 1361245123 is about 36895.0555359387. The cubic root of 1361245123 is about 1108.2696637039.

Adding to 1361245123 its reverse (3215421631), we get a palindrome (4576666754).

The spelling of 1361245123 in words is "one billion, three hundred sixty-one million, two hundred forty-five thousand, one hundred twenty-three".