102421344 has 24 divisors (see below), whose sum is σ = 268856280. Its totient is φ = 34140416.

The previous prime is 102421331. The next prime is 102421349. The reversal of 102421344 is 443124201.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 102421344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102421349) 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, 533349 + ... + 533540.

It is an arithmetic number, because the mean of its divisors is an integer number (11202345).

Almost surely, 2^102421344 is an apocalyptic number.

It is an amenable number.

102421344 is an abundant number, since it is smaller than the sum of its proper divisors (166434936).

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

102421344 is a wasteful number, since it uses less digits than its factorization.

102421344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066902 (or 1066894 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 102421344 is about 10120.3430771886. The cubic root of 102421344 is about 467.8753411864.

Adding to 102421344 its reverse (443124201), we get a palindrome (545545545).

The spelling of 102421344 in words is "one hundred two million, four hundred twenty-one thousand, three hundred forty-four".