1242134424 has 96 divisors (see below), whose sum is σ = 3616704000. Its totient is φ = 383887296.

The previous prime is 1242134419. The next prime is 1242134479. The reversal of 1242134424 is 4244312421.

1242134424 is a `hidden beast` number, since 1 + 2 + 4 + 213 + 442 + 4 = 666.

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

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, 54637 + ... + 73955.

It is an arithmetic number, because the mean of its divisors is an integer number (37674000).

Almost surely, 2^1242134424 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 1242134424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1808352000).

1242134424 is an abundant number, since it is smaller than the sum of its proper divisors (2374569576).

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

1242134424 is a wasteful number, since it uses less digits than its factorization.

1242134424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19397 (or 19390 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 1242134424 is about 35243.9274769427. The cubic root of 1242134424 is about 1074.9531399080.

Adding to 1242134424 its reverse (4244312421), we get a palindrome (5486446845).

The spelling of 1242134424 in words is "one billion, two hundred forty-two million, one hundred thirty-four thousand, four hundred twenty-four".