1353040123 has 4 divisors (see below), whose sum is σ = 1353335320. Its totient is φ = 1352744928.

The previous prime is 1353040121. The next prime is 1353040151. The reversal of 1353040123 is 3210403531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1353040123 - 2¹ = 1353040121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1353040094 and 1353040103.

It is not an unprimeable number, because it can be changed into a prime (1353040121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140613 + ... + 149926.

It is an arithmetic number, because the mean of its divisors is an integer number (338333830).

Almost surely, 2^1353040123 is an apocalyptic number.

1353040123 is a deficient number, since it is larger than the sum of its proper divisors (295197).

1353040123 is an equidigital number, since it uses as much as digits as its factorization.

1353040123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295196.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1353040123 is about 36783.6937106648. The cubic root of 1353040123 is about 1106.0384504965.

Adding to 1353040123 its reverse (3210403531), we get a palindrome (4563443654).

The spelling of 1353040123 in words is "one billion, three hundred fifty-three million, forty thousand, one hundred twenty-three".