105211420 has 24 divisors (see below), whose sum is σ = 228564000. Its totient is φ = 40633152.

The previous prime is 105211409. The next prime is 105211423. The reversal of 105211420 is 24112501.

It is a super-2 number, since 2×105211420² = 22138885796832800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105211394 and 105211403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105211423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90120 + ... + 91279.

It is an arithmetic number, because the mean of its divisors is an integer number (9523500).

Almost surely, 2^105211420 is an apocalyptic number.

105211420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105211420 is an abundant number, since it is smaller than the sum of its proper divisors (123352580).

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

105211420 is a wasteful number, since it uses less digits than its factorization.

105211420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181437 (or 181435 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 105211420 is about 10257.2618178537. The cubic root of 105211420 is about 472.0858253871.

Adding to 105211420 its reverse (24112501), we get a palindrome (129323921).

The spelling of 105211420 in words is "one hundred five million, two hundred eleven thousand, four hundred twenty".