105214520 has 16 divisors (see below), whose sum is σ = 236732760. Its totient is φ = 42085792.

The previous prime is 105214477. The next prime is 105214553. The reversal of 105214520 is 25412501.

It is a super-2 number, since 2×105214520² = 22140190437660800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 105214492 and 105214501.

It is a congruent number.

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, 1315142 + ... + 1315221.

Almost surely, 2^105214520 is an apocalyptic number.

105214520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105214520 is an abundant number, since it is smaller than the sum of its proper divisors (131518240).

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

105214520 is a wasteful number, since it uses less digits than its factorization.

105214520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630374 (or 2630370 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 105214520 is about 10257.4129291942. The cubic root of 105214520 is about 472.0904619297.

The spelling of 105214520 in words is "one hundred five million, two hundred fourteen thousand, five hundred twenty".