102424440 has 128 divisors (see below), whose sum is σ = 326592000. Its totient is φ = 25625088.

The previous prime is 102424393. The next prime is 102424447. The reversal of 102424440 is 44424201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102424447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380626 + ... + 380894.

It is an arithmetic number, because the mean of its divisors is an integer number (2551500).

Almost surely, 2^102424440 is an apocalyptic number.

102424440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102424440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163296000).

102424440 is an abundant number, since it is smaller than the sum of its proper divisors (224167560).

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

102424440 is a wasteful number, since it uses less digits than its factorization.

102424440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 102424440 is about 10120.4960352742. The cubic root of 102424440 is about 467.8800554624.

Adding to 102424440 its reverse (44424201), we get a palindrome (146848641).

The spelling of 102424440 in words is "one hundred two million, four hundred twenty-four thousand, four hundred forty".