126143815540 has 48 divisors (see below), whose sum is σ = 273731318784. Its totient is φ = 48779136000.

The previous prime is 126143815517. The next prime is 126143815541. The reversal of 126143815540 is 45518341621.

It is a junction number, because it is equal to n+sod(n) for n = 126143815493 and 126143815502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126143815541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494340 + ... + 704740.

It is an arithmetic number, because the mean of its divisors is an integer number (5702735808).

Almost surely, 2^126143815540 is an apocalyptic number.

126143815540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126143815540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136865659392).

126143815540 is an abundant number, since it is smaller than the sum of its proper divisors (147587503244).

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

126143815540 is a wasteful number, since it uses less digits than its factorization.

126143815540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211408 (or 211406 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 126143815540 in words is "one hundred twenty-six billion, one hundred forty-three million, eight hundred fifteen thousand, five hundred forty".