1021204132434 has 24 divisors (see below), whose sum is σ = 2223840478860. Its totient is φ = 338673450528.

The previous prime is 1021204132427. The next prime is 1021204132439. The reversal of 1021204132434 is 4342314021201.

1021204132434 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 2 + 0 + 413 + 243 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1021120355025 + 83777409 = 1010505^2 + 9153^2 .

It is a super-2 number, since 2×1021204132434² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021204132398 and 1021204132407.

It is not an unprimeable number, because it can be changed into a prime (1021204132439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143990269 + ... + 143997360.

Almost surely, 2^{1021204132434} is an apocalyptic number.

1021204132434 is an abundant number, since it is smaller than the sum of its proper divisors (1202636346426).

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

1021204132434 is a wasteful number, since it uses less digits than its factorization.

1021204132434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287987834 (or 287987831 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1021204132434 its reverse (4342314021201), we get a palindrome (5363518153635).

The spelling of 1021204132434 in words is "one trillion, twenty-one billion, two hundred four million, one hundred thirty-two thousand, four hundred thirty-four".