12390034 has 4 divisors (see below), whose sum is σ = 18585054. Its totient is φ = 6195016.

The previous prime is 12390029. The next prime is 12390041. The reversal of 12390034 is 43009321.

12390034 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43009321 = 3701 ⋅11621.

It can be written as a sum of positive squares in only one way, i.e., 12271009 + 119025 = 3503^2 + 345^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12389987 and 12390014.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3097507 + ... + 3097510.

Almost surely, 2^12390034 is an apocalyptic number.

12390034 is a deficient number, since it is larger than the sum of its proper divisors (6195020).

12390034 is an equidigital number, since it uses as much as digits as its factorization.

12390034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6195019.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 12390034 is about 3519.9480109797. The cubic root of 12390034 is about 231.3968802455.

Adding to 12390034 its reverse (43009321), we get a palindrome (55399355).

The spelling of 12390034 in words is "twelve million, three hundred ninety thousand, thirty-four".