123143040 has 96 divisors (see below), whose sum is σ = 425248200. Its totient is φ = 32836608.

The previous prime is 123143023. The next prime is 123143057. The reversal of 123143040 is 40341321.

123143040 is a `hidden beast` number, since 1 + 231 + 430 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (123143023) and next prime (123143057).

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4930 + ... + 16449.

Almost surely, 2^123143040 is an apocalyptic number.

123143040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123143040 is an abundant number, since it is smaller than the sum of its proper divisors (302105160).

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

123143040 is a wasteful number, since it uses less digits than its factorization.

123143040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21404 (or 21389 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 123143040 is about 11096.9833738724. The cubic root of 123143040 is about 497.5116905075.

Adding to 123143040 its reverse (40341321), we get a palindrome (163484361).

The spelling of 123143040 in words is "one hundred twenty-three million, one hundred forty-three thousand, forty".