1242436128 has 48 divisors (see below), whose sum is σ = 3279459456. Its totient is φ = 411851520.

The previous prime is 1242436093. The next prime is 1242436147. The reversal of 1242436128 is 8216342421.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 18376 + ... + 53127.

It is an arithmetic number, because the mean of its divisors is an integer number (68322072).

Almost surely, 2^1242436128 is an apocalyptic number.

It is an amenable number.

1242436128 is an abundant number, since it is smaller than the sum of its proper divisors (2037023328).

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

1242436128 is a wasteful number, since it uses less digits than its factorization.

1242436128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71697 (or 71689 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 1242436128 is about 35248.2074437836. The cubic root of 1242436128 is about 1075.0401652200.

Adding to 1242436128 its reverse (8216342421), we get a palindrome (9458778549).

The spelling of 1242436128 in words is "one billion, two hundred forty-two million, four hundred thirty-six thousand, one hundred twenty-eight".