123534143343400 has 48 divisors (see below), whose sum is σ = 287226235836540. Its totient is φ = 49412048294400.

The previous prime is 123534143343397. The next prime is 123534143343451. The reversal of 123534143343400 is 4343341435321.

It can be written as a sum of positive squares in 6 ways, for example, as 83939568717316 + 39594574626084 = 9161854^2 + 6292422^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3889741 + ... + 16192540.

Almost surely, 2^{123534143343400} is an apocalyptic number.

123534143343400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123534143343400 is an abundant number, since it is smaller than the sum of its proper divisors (163692092493140).

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

123534143343400 is a wasteful number, since it uses less digits than its factorization.

123534143343400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20113054 (or 20113045 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 40.

Adding to 123534143343400 its reverse (4343341435321), we get a palindrome (127877484778721).

The spelling of 123534143343400 in words is "one hundred twenty-three trillion, five hundred thirty-four billion, one hundred forty-three million, three hundred forty-three thousand, four hundred".