126261912 has 64 divisors (see below), whose sum is σ = 363121920. Its totient is φ = 35837568.

The previous prime is 126261869. The next prime is 126261917. The reversal of 126261912 is 219162621.

It is a self number, because there is not a number n which added to its sum of digits gives 126261912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126261917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23983 + ... + 28769.

It is an arithmetic number, because the mean of its divisors is an integer number (5673780).

Almost surely, 2^126261912 is an apocalyptic number.

126261912 is a gapful number since it is divisible by the number (12) 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 126261912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181560960).

126261912 is an abundant number, since it is smaller than the sum of its proper divisors (236860008).

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

126261912 is a wasteful number, since it uses less digits than its factorization.

126261912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960 (or 4956 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 126261912 is about 11236.6325916620. The cubic root of 126261912 is about 501.6769189317.

The spelling of 126261912 in words is "one hundred twenty-six million, two hundred sixty-one thousand, nine hundred twelve".