105420250 has 64 divisors (see below), whose sum is σ = 214905600. Its totient is φ = 38491200.

The previous prime is 105420223. The next prime is 105420269. The reversal of 105420250 is 52024501.

It is a super-2 number, since 2×105420250² = 22226858220125000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529651 + ... + 529849.

It is an arithmetic number, because the mean of its divisors is an integer number (3357900).

Almost surely, 2^105420250 is an apocalyptic number.

105420250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105420250 is an abundant number, since it is smaller than the sum of its proper divisors (109485350).

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

105420250 is a wasteful number, since it uses less digits than its factorization.

105420250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 105420250 is about 10267.4363888947. The cubic root of 105420250 is about 472.3979604781.

Adding to 105420250 its reverse (52024501), we get a palindrome (157444751).

The spelling of 105420250 in words is "one hundred five million, four hundred twenty thousand, two hundred fifty".