102830421 has 4 divisors (see below), whose sum is σ = 137107232. Its totient is φ = 68553612.

The previous prime is 102830411. The next prime is 102830459. The reversal of 102830421 is 124038201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 102830421 - 2¹⁴ = 102814037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102830411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17138401 + ... + 17138406.

It is an arithmetic number, because the mean of its divisors is an integer number (34276808).

Almost surely, 2^102830421 is an apocalyptic number.

It is an amenable number.

102830421 is a deficient number, since it is larger than the sum of its proper divisors (34276811).

102830421 is an equidigital number, since it uses as much as digits as its factorization.

102830421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34276810.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 102830421 is about 10140.5335658436. The cubic root of 102830421 is about 468.4974211172.

Adding to 102830421 its reverse (124038201), we get a palindrome (226868622).

The spelling of 102830421 in words is "one hundred two million, eight hundred thirty thousand, four hundred twenty-one".