1239216426 has 48 divisors (see below), whose sum is σ = 3126449664. Its totient is φ = 347379552.

The previous prime is 1239216323. The next prime is 1239216427. The reversal of 1239216426 is 6246129321.

It is a happy number.

1239216426 is a `hidden beast` number, since 1 + 2 + 3 + 9 + 2 + 1 + 642 + 6 = 666.

1239216426 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1239216427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86106 + ... + 99461.

It is an arithmetic number, because the mean of its divisors is an integer number (65134368).

Almost surely, 2^1239216426 is an apocalyptic number.

1239216426 is an abundant number, since it is smaller than the sum of its proper divisors (1887233238).

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

1239216426 is a wasteful number, since it uses less digits than its factorization.

1239216426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185635 (or 185632 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 1239216426 is about 35202.5059619340. The cubic root of 1239216426 is about 1074.1107269088.

The spelling of 1239216426 in words is "one billion, two hundred thirty-nine million, two hundred sixteen thousand, four hundred twenty-six".