126788421740 has 24 divisors (see below), whose sum is σ = 266347714752. Its totient is φ = 50697839360.

The previous prime is 126788421733. The next prime is 126788421743. The reversal of 126788421740 is 47124887621.

It is a super-3 number, since 3×126788421740³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (126788421743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036196 + ... + 1152075.

It is an arithmetic number, because the mean of its divisors is an integer number (11097821448).

Almost surely, 2^126788421740 is an apocalyptic number.

126788421740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126788421740 is an abundant number, since it is smaller than the sum of its proper divisors (139559293012).

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

126788421740 is a wasteful number, since it uses less digits than its factorization.

126788421740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191177 (or 2191175 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 50.

The spelling of 126788421740 in words is "one hundred twenty-six billion, seven hundred eighty-eight million, four hundred twenty-one thousand, seven hundred forty".