102424421 has 16 divisors (see below), whose sum is σ = 120130560. Its totient is φ = 86327280.

The previous prime is 102424393. The next prime is 102424447. The reversal of 102424421 is 124424201.

It is a cyclic number.

It is not a de Polignac number, because 102424421 - 2¹⁰ = 102423397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102424393 and 102424402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102424471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4610 + ... + 15036.

It is an arithmetic number, because the mean of its divisors is an integer number (7508160).

Almost surely, 2^102424421 is an apocalyptic number.

102424421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102424421 is a deficient number, since it is larger than the sum of its proper divisors (17706139).

102424421 is a wasteful number, since it uses less digits than its factorization.

102424421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10504.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 102424421 is about 10120.4950965849. The cubic root of 102424421 is about 467.8800265314.

Adding to 102424421 its reverse (124424201), we get a palindrome (226848622).

The spelling of 102424421 in words is "one hundred two million, four hundred twenty-four thousand, four hundred twenty-one".