126011780 has 12 divisors (see below), whose sum is σ = 264624780. Its totient is φ = 50404704.

The previous prime is 126011777. The next prime is 126011783. The reversal of 126011780 is 87110621.

It is an interprime number because it is at equal distance from previous prime (126011777) and next prime (126011783).

It can be written as a sum of positive squares in 2 ways, for example, as 86974276 + 39037504 = 9326^2 + 6248^2 .

It is not an unprimeable number, because it can be changed into a prime (126011783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3150275 + ... + 3150314.

It is an arithmetic number, because the mean of its divisors is an integer number (22052065).

Almost surely, 2^126011780 is an apocalyptic number.

126011780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126011780 is an abundant number, since it is smaller than the sum of its proper divisors (138613000).

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

126011780 is a wasteful number, since it uses less digits than its factorization.

126011780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6300598 (or 6300596 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 126011780 is about 11225.4968709630. The cubic root of 126011780 is about 501.3454164619.

The spelling of 126011780 in words is "one hundred twenty-six million, eleven thousand, seven hundred eighty".