1312420112 has 40 divisors (see below), whose sum is σ = 2661151104. Its totient is φ = 625839104.

The previous prime is 1312420103. The next prime is 1312420147. The reversal of 1312420112 is 2110242131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124853 + ... + 134955.

Almost surely, 2^1312420112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312420112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330575552).

1312420112 is an abundant number, since it is smaller than the sum of its proper divisors (1348730992).

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

1312420112 is a wasteful number, since it uses less digits than its factorization.

1312420112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10487 (or 10481 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1312420112 is about 36227.3392895476. The cubic root of 1312420112 is about 1094.8575704879.

Adding to 1312420112 its reverse (2110242131), we get a palindrome (3422662243).

The spelling of 1312420112 in words is "one billion, three hundred twelve million, four hundred twenty thousand, one hundred twelve".