126443643240 has 64 divisors (see below), whose sum is σ = 379445002560. Its totient is φ = 33708165120.

The previous prime is 126443643233. The next prime is 126443643253. The reversal of 126443643240 is 42346344621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246567 + ... + 560073.

It is an arithmetic number, because the mean of its divisors is an integer number (5928828165).

Almost surely, 2^126443643240 is an apocalyptic number.

126443643240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126443643240 is an abundant number, since it is smaller than the sum of its proper divisors (253001359320).

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

126443643240 is a wasteful number, since it uses less digits than its factorization.

126443643240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316882 (or 316878 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 39.

Adding to 126443643240 its reverse (42346344621), we get a palindrome (168789987861).

The spelling of 126443643240 in words is "one hundred twenty-six billion, four hundred forty-three million, six hundred forty-three thousand, two hundred forty".