1242423234 has 48 divisors (see below), whose sum is σ = 2946545784. Its totient is φ = 376012800.

The previous prime is 1242423229. The next prime is 1242423289. The reversal of 1242423234 is 4323242421.

1242423234 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 423 + 234 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 945378009 + 297045225 = 30747^2 + 17235^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1242423198 and 1242423207.

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, 29247 + ... + 57794.

Almost surely, 2^1242423234 is an apocalyptic number.

1242423234 is an abundant number, since it is smaller than the sum of its proper divisors (1704122550).

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

1242423234 is a wasteful number, since it uses less digits than its factorization.

1242423234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87123 (or 87120 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 1242423234 is about 35248.0245403909. The cubic root of 1242423234 is about 1075.0364462855.

Adding to 1242423234 its reverse (4323242421), we get a palindrome (5565665655).

The spelling of 1242423234 in words is "one billion, two hundred forty-two million, four hundred twenty-three thousand, two hundred thirty-four".