13123450 has 12 divisors (see below), whose sum is σ = 24409710. Its totient is φ = 5249360.

The previous prime is 13123441. The next prime is 13123459. The reversal of 13123450 is 5432131.

It is an interprime number because it is at equal distance from previous prime (13123441) and next prime (13123459).

It can be written as a sum of positive squares in 3 ways, for example, as 5555449 + 7568001 = 2357^2 + 2751^2 .

It is not an unprimeable number, because it can be changed into a prime (13123459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131185 + ... + 131284.

Almost surely, 2^13123450 is an apocalyptic number.

13123450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13123450 is a deficient number, since it is larger than the sum of its proper divisors (11286260).

13123450 is a wasteful number, since it uses less digits than its factorization.

13123450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262481 (or 262476 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13123450 is about 3622.6302599078. The cubic root of 13123450 is about 235.8754130304.

Adding to 13123450 its reverse (5432131), we get a palindrome (18555581).

The spelling of 13123450 in words is "thirteen million, one hundred twenty-three thousand, four hundred fifty".