123034512 has 60 divisors (see below), whose sum is σ = 323218896. Its totient is φ = 40328640.

The previous prime is 123034511. The next prime is 123034517. The reversal of 123034512 is 215430321.

It is a super-2 number, since 2×123034512² = 30274982286156288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123034511) 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, 215187 + ... + 215757.

Almost surely, 2^123034512 is an apocalyptic number.

123034512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123034512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161609448).

123034512 is an abundant number, since it is smaller than the sum of its proper divisors (200184384).

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

123034512 is an equidigital number, since it uses as much as digits as its factorization.

123034512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 123034512 is about 11092.0923184041. The cubic root of 123034512 is about 497.3654924535.

Adding to 123034512 its reverse (215430321), we get a palindrome (338464833).

The spelling of 123034512 in words is "one hundred twenty-three million, thirty-four thousand, five hundred twelve".