126666920420 has 24 divisors (see below), whose sum is σ = 271660120704. Its totient is φ = 49588751456.

The previous prime is 126666920371. The next prime is 126666920461. The reversal of 126666920420 is 24029666621.

It is a super-2 number, since 2×126666920420² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67375082 + ... + 67376961.

It is an arithmetic number, because the mean of its divisors is an integer number (11319171696).

Almost surely, 2^126666920420 is an apocalyptic number.

126666920420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126666920420 is an abundant number, since it is smaller than the sum of its proper divisors (144993200284).

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

126666920420 is a wasteful number, since it uses less digits than its factorization.

126666920420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134752099 (or 134752097 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 126666920420 in words is "one hundred twenty-six billion, six hundred sixty-six million, nine hundred twenty thousand, four hundred twenty".