1123401229 has 4 divisors (see below), whose sum is σ = 1124166400. Its totient is φ = 1122636060.

The previous prime is 1123401221. The next prime is 1123401287. The reversal of 1123401229 is 9221043211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1123401229 - 2³ = 1123401221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123401221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380379 + ... + 383320.

It is an arithmetic number, because the mean of its divisors is an integer number (281041600).

Almost surely, 2^1123401229 is an apocalyptic number.

It is an amenable number.

1123401229 is a deficient number, since it is larger than the sum of its proper divisors (765171).

1123401229 is an equidigital number, since it uses as much as digits as its factorization.

1123401229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765170.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1123401229 is about 33517.1781180934. The cubic root of 1123401229 is about 1039.5489997781.

It can be divided in two parts, 112340 and 1229, that added together give a square (113569 = 337²).

The spelling of 1123401229 in words is "one billion, one hundred twenty-three million, four hundred one thousand, two hundred twenty-nine".