12612042 has 48 divisors (see below), whose sum is σ = 29076840. Its totient is φ = 3943296.

The previous prime is 12612001. The next prime is 12612091. The reversal of 12612042 is 24021621.

12612042 is a `hidden beast` number, since 12 + 612 + 0 + 42 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11553201 + 1058841 = 3399^2 + 1029^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18988 + ... + 19640.

Almost surely, 2^12612042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12612042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14538420).

12612042 is an abundant number, since it is smaller than the sum of its proper divisors (16464798).

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

12612042 is a wasteful number, since it uses less digits than its factorization.

12612042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 12612042 is about 3551.3436893660. The cubic root of 12612042 is about 232.7707840546.

Adding to 12612042 its reverse (24021621), we get a palindrome (36633663).

The spelling of 12612042 in words is "twelve million, six hundred twelve thousand, forty-two".