102443420254 has 24 divisors (see below), whose sum is σ = 181270979568. Its totient is φ = 43285949280.

The previous prime is 102443420249. The next prime is 102443420267. The reversal of 102443420254 is 452024344201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7354599 + ... + 7368514.

It is an arithmetic number, because the mean of its divisors is an integer number (7552957482).

Almost surely, 2^102443420254 is an apocalyptic number.

102443420254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

102443420254 is a deficient number, since it is larger than the sum of its proper divisors (78827559314).

102443420254 is a wasteful number, since it uses less digits than its factorization.

102443420254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14723200 (or 14723193 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 102443420254 its reverse (452024344201), we get a palindrome (554467764455).

The spelling of 102443420254 in words is "one hundred two billion, four hundred forty-three million, four hundred twenty thousand, two hundred fifty-four".