1321123254 has 24 divisors (see below), whose sum is σ = 2904289080. Its totient is φ = 400340160.

The previous prime is 1321123253. The next prime is 1321123259. The reversal of 1321123254 is 4523211231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321123253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 909139 + ... + 910590.

It is an arithmetic number, because the mean of its divisors is an integer number (121012045).

Almost surely, 2^1321123254 is an apocalyptic number.

1321123254 is an abundant number, since it is smaller than the sum of its proper divisors (1583165826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321123254 is a wasteful number, since it uses less digits than its factorization.

1321123254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819756 (or 1819745 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1321123254 is about 36347.2592364266. The cubic root of 1321123254 is about 1097.2723753454.

Adding to 1321123254 its reverse (4523211231), we get a palindrome (5844334485).

The spelling of 1321123254 in words is "one billion, three hundred twenty-one million, one hundred twenty-three thousand, two hundred fifty-four".