102404420 has 12 divisors (see below), whose sum is σ = 215049324. Its totient is φ = 40961760.

The previous prime is 102404411. The next prime is 102404437. The reversal of 102404420 is 24404201.

It can be written as a sum of positive squares in 2 ways, for example, as 78570496 + 23833924 = 8864^2 + 4882^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2560091 + ... + 2560130.

It is an arithmetic number, because the mean of its divisors is an integer number (17920777).

Almost surely, 2^102404420 is an apocalyptic number.

102404420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102404420 is an abundant number, since it is smaller than the sum of its proper divisors (112644904).

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

102404420 is a wasteful number, since it uses less digits than its factorization.

102404420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120230 (or 5120228 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 102404420 is about 10119.5069049831. The cubic root of 102404420 is about 467.8495693497.

Adding to 102404420 its reverse (24404201), we get a palindrome (126808621).

The spelling of 102404420 in words is "one hundred two million, four hundred four thousand, four hundred twenty".