102430424421 has 80 divisors (see below), whose sum is σ = 166214087424. Its totient is φ = 62489460096.

The previous prime is 102430424359. The next prime is 102430424423. The reversal of 102430424421 is 124424034201.

It is not a de Polignac number, because 102430424421 - 2²¹ = 102428327269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102430424423) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 71981316 + ... + 71982738.

Almost surely, 2^102430424421 is an apocalyptic number.

It is an amenable number.

102430424421 is a deficient number, since it is larger than the sum of its proper divisors (63783663003).

102430424421 is a wasteful number, since it uses less digits than its factorization.

102430424421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992 (or 1983 counting only the distinct ones).

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

Adding to 102430424421 its reverse (124424034201), we get a palindrome (226854458622).

It can be divided in two parts, 102430 and 424421, that added together give a triangular number (526851 = T₁₀₂₆).

The spelling of 102430424421 in words is "one hundred two billion, four hundred thirty million, four hundred twenty-four thousand, four hundred twenty-one".