12435138 has 12 divisors (see below), whose sum is σ = 26942838. Its totient is φ = 4145040.

The previous prime is 12435121. The next prime is 12435167. The reversal of 12435138 is 83153421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7112889 + 5322249 = 2667^2 + 2307^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 345403 + ... + 345438.

Almost surely, 2^12435138 is an apocalyptic number.

12435138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12435138 is an abundant number, since it is smaller than the sum of its proper divisors (14507700).

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

12435138 is a wasteful number, since it uses less digits than its factorization.

12435138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690849 (or 690846 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 12435138 is about 3526.3491035347. The cubic root of 12435138 is about 231.6773283800.

Adding to 12435138 its reverse (83153421), we get a palindrome (95588559).

The spelling of 12435138 in words is "twelve million, four hundred thirty-five thousand, one hundred thirty-eight".