1233121423 has 8 divisors (see below), whose sum is σ = 1246056480. Its totient is φ = 1220200800.

The previous prime is 1233121411. The next prime is 1233121481. The reversal of 1233121423 is 3241213321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1233121423 - 2²¹ = 1231024271 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1233121394 and 1233121403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233121523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289473 + ... + 293701.

It is an arithmetic number, because the mean of its divisors is an integer number (155757060).

Almost surely, 2^1233121423 is an apocalyptic number.

1233121423 is a deficient number, since it is larger than the sum of its proper divisors (12935057).

1233121423 is a wasteful number, since it uses less digits than its factorization.

1233121423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7217.

The product of its digits is 864, while the sum is 22.

The square root of 1233121423 is about 35115.8286674257. The cubic root of 1233121423 is about 1072.3468513469.

Adding to 1233121423 its reverse (3241213321), we get a palindrome (4474334744).

The spelling of 1233121423 in words is "one billion, two hundred thirty-three million, one hundred twenty-one thousand, four hundred twenty-three".