1203542423 has 4 divisors (see below), whose sum is σ = 1208844600. Its totient is φ = 1198240248.

The previous prime is 1203542407. The next prime is 1203542449. The reversal of 1203542423 is 3242453021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3242453021 = 55511 ⋅58411.

It is a cyclic number.

It is not a de Polignac number, because 1203542423 - 2⁴ = 1203542407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203542392 and 1203542401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203542453) 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, 2650748 + ... + 2651201.

It is an arithmetic number, because the mean of its divisors is an integer number (302211150).

Almost surely, 2^1203542423 is an apocalyptic number.

1203542423 is a deficient number, since it is larger than the sum of its proper divisors (5302177).

1203542423 is an equidigital number, since it uses as much as digits as its factorization.

1203542423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302176.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 1203542423 is about 34692.1089442542. The cubic root of 1203542423 is about 1063.7032047492.

Adding to 1203542423 its reverse (3242453021), we get a palindrome (4445995444).

The spelling of 1203542423 in words is "one billion, two hundred three million, five hundred forty-two thousand, four hundred twenty-three".