1242421322634 has 64 divisors (see below), whose sum is σ = 2798720870400. Its totient is φ = 408488898096.

The previous prime is 1242421322603. The next prime is 1242421322707. The reversal of 1242421322634 is 4362231242421.

1242421322634 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 4 + 2 + 13 + 2 + 2 + 634 = 666.

It is a super-2 number, since 2×1242421322634² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2550447 + ... + 2998269.

It is an arithmetic number, because the mean of its divisors is an integer number (43730013600).

Almost surely, 2^{1242421322634} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242421322634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399360435200).

1242421322634 is an abundant number, since it is smaller than the sum of its proper divisors (1556299547766).

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

1242421322634 is a wasteful number, since it uses less digits than its factorization.

1242421322634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448536 (or 448530 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The spelling of 1242421322634 in words is "one trillion, two hundred forty-two billion, four hundred twenty-one million, three hundred twenty-two thousand, six hundred thirty-four".