1242396396 has 72 divisors (see below), whose sum is σ = 3314620400. Its totient is φ = 391288320.

The previous prime is 1242396347. The next prime is 1242396401. The reversal of 1242396396 is 6936932421.

1242396396 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 3 + 9 + 639 + 6 = 666.

1242396396 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

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, 277536 + ... + 281976.

Almost surely, 2^1242396396 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 1242396396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1657310200).

1242396396 is an abundant number, since it is smaller than the sum of its proper divisors (2072224004).

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

1242396396 is a wasteful number, since it uses less digits than its factorization.

1242396396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4879 (or 4874 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 1242396396 is about 35247.6438361488. The cubic root of 1242396396 is about 1075.0287054891.

The spelling of 1242396396 in words is "one billion, two hundred forty-two million, three hundred ninety-six thousand, three hundred ninety-six".