105551420 has 24 divisors (see below), whose sum is σ = 238709184. Its totient is φ = 38972736.

The previous prime is 105551389. The next prime is 105551437. The reversal of 105551420 is 24155501.

It is a happy number.

It is a super-2 number, since 2×105551420² = 22282204528032800, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 202724 + ... + 203243.

It is an arithmetic number, because the mean of its divisors is an integer number (9946216).

Almost surely, 2^105551420 is an apocalyptic number.

105551420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105551420 is an abundant number, since it is smaller than the sum of its proper divisors (133157764).

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

105551420 is a wasteful number, since it uses less digits than its factorization.

105551420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405989 (or 405987 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 105551420 is about 10273.8220736005. The cubic root of 105551420 is about 472.5938076020.

The spelling of 105551420 in words is "one hundred five million, five hundred fifty-one thousand, four hundred twenty".