105143400 has 96 divisors (see below), whose sum is σ = 362179200. Its totient is φ = 28036800.

The previous prime is 105143387. The next prime is 105143407. The reversal of 105143400 is 4341501.

It is a happy number.

It is a super-2 number, since 2×105143400² = 22110269127120000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (105143407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4336 + ... + 15135.

It is an arithmetic number, because the mean of its divisors is an integer number (3772700).

Almost surely, 2^105143400 is an apocalyptic number.

105143400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105143400 is an abundant number, since it is smaller than the sum of its proper divisors (257035800).

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

105143400 is a wasteful number, since it uses less digits than its factorization.

105143400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19496 (or 19481 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 105143400 is about 10253.9455820674. The cubic root of 105143400 is about 471.9840677376.

Adding to 105143400 its reverse (4341501), we get a palindrome (109484901).

The spelling of 105143400 in words is "one hundred five million, one hundred forty-three thousand, four hundred".