1230123432 has 16 divisors (see below), whose sum is σ = 3075308640. Its totient is φ = 410041136.

The previous prime is 1230123409. The next prime is 1230123449. The reversal of 1230123432 is 2343210321.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1230123399 and 1230123408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25627548 + ... + 25627595.

It is an arithmetic number, because the mean of its divisors is an integer number (192206790).

Almost surely, 2^1230123432 is an apocalyptic number.

1230123432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230123432 is an abundant number, since it is smaller than the sum of its proper divisors (1845185208).

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

1230123432 is a wasteful number, since it uses less digits than its factorization.

1230123432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51255152 (or 51255148 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1230123432 is about 35073.1155160188. The cubic root of 1230123432 is about 1071.4771086380.

Adding to 1230123432 its reverse (2343210321), we get a palindrome (3573333753).

The spelling of 1230123432 in words is "one billion, two hundred thirty million, one hundred twenty-three thousand, four hundred thirty-two".