126720104 has 16 divisors (see below), whose sum is σ = 271543200. Its totient is φ = 54308592.

The previous prime is 126720103. The next prime is 126720107. The reversal of 126720104 is 401027621.

It is a self number, because there is not a number n which added to its sum of digits gives 126720104.

It is not an unprimeable number, because it can be changed into a prime (126720103) 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 3 ways as a sum of consecutive naturals, for example, 1131374 + ... + 1131485.

It is an arithmetic number, because the mean of its divisors is an integer number (16971450).

Almost surely, 2^126720104 is an apocalyptic number.

126720104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

126720104 is an abundant number, since it is smaller than the sum of its proper divisors (144823096).

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

126720104 is a wasteful number, since it uses less digits than its factorization.

126720104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262872 (or 2262868 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 126720104 is about 11257.0024429241. The cubic root of 126720104 is about 502.2830316666.

Adding to 126720104 its reverse (401027621), we get a palindrome (527747725).

The spelling of 126720104 in words is "one hundred twenty-six million, seven hundred twenty thousand, one hundred four".