1252421432234 has 64 divisors (see below), whose sum is σ = 2307082848000. Its totient is φ = 508292112384.

The previous prime is 1252421432221. The next prime is 1252421432237. The reversal of 1252421432234 is 4322341242521.

It is a junction number, because it is equal to n+sod(n) for n = 1252421432194 and 1252421432203.

It is not an unprimeable number, because it can be changed into a prime (1252421432237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33778634 + ... + 33815690.

It is an arithmetic number, because the mean of its divisors is an integer number (36048169500).

Almost surely, 2^{1252421432234} is an apocalyptic number.

1252421432234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1252421432234 is a deficient number, since it is larger than the sum of its proper divisors (1054661415766).

1252421432234 is a wasteful number, since it uses less digits than its factorization.

1252421432234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39692 (or 39678 counting only the distinct ones).

The product of its digits is 92160, while the sum is 35.

Adding to 1252421432234 its reverse (4322341242521), we get a palindrome (5574762674755).

The spelling of 1252421432234 in words is "one trillion, two hundred fifty-two billion, four hundred twenty-one million, four hundred thirty-two thousand, two hundred thirty-four".