126213070640 has 40 divisors (see below), whose sum is σ = 293518088640. Its totient is φ = 50472720896.

The previous prime is 126213070639. The next prime is 126213070661. The reversal of 126213070640 is 46070312621.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 126213070597 and 126213070606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132932 + ... + 519708.

It is an arithmetic number, because the mean of its divisors is an integer number (7337952216).

Almost surely, 2^126213070640 is an apocalyptic number.

126213070640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126213070640 is an abundant number, since it is smaller than the sum of its proper divisors (167305018000).

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

126213070640 is a wasteful number, since it uses less digits than its factorization.

126213070640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390869 (or 390863 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 126213070640 in words is "one hundred twenty-six billion, two hundred thirteen million, seventy thousand, six hundred forty".