102431420 has 96 divisors (see below), whose sum is σ = 276369408. Its totient is φ = 30995712.

The previous prime is 102431419. The next prime is 102431437. The reversal of 102431420 is 24134201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40637 + ... + 43083.

It is an arithmetic number, because the mean of its divisors is an integer number (2878848).

Almost surely, 2^102431420 is an apocalyptic number.

102431420 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 102431420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138184704).

102431420 is an abundant number, since it is smaller than the sum of its proper divisors (173937988).

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

102431420 is a wasteful number, since it uses less digits than its factorization.

102431420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499 (or 2497 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 102431420 is about 10120.8408741567. The cubic root of 102431420 is about 467.8906835528.

Adding to 102431420 its reverse (24134201), we get a palindrome (126565621).

The spelling of 102431420 in words is "one hundred two million, four hundred thirty-one thousand, four hundred twenty".