1233255421 has 8 divisors (see below), whose sum is σ = 1283425920. Its totient is φ = 1183594608.

The previous prime is 1233255407. The next prime is 1233255427. The reversal of 1233255421 is 1245523321.

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 1233255421 - 2⁹ = 1233254909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1233255421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233255427) 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, 122481 + ... + 132166.

It is an arithmetic number, because the mean of its divisors is an integer number (160428240).

Almost surely, 2^1233255421 is an apocalyptic number.

It is an amenable number.

1233255421 is a deficient number, since it is larger than the sum of its proper divisors (50170499).

1233255421 is a wasteful number, since it uses less digits than its factorization.

1233255421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254843.

The product of its digits is 7200, while the sum is 28.

The square root of 1233255421 is about 35117.7365586109. The cubic root of 1233255421 is about 1072.3856923797.

Adding to 1233255421 its reverse (1245523321), we get a palindrome (2478778742).

The spelling of 1233255421 in words is "one billion, two hundred thirty-three million, two hundred fifty-five thousand, four hundred twenty-one".