126120407 has 4 divisors (see below), whose sum is σ = 144137616. Its totient is φ = 108103200.

The previous prime is 126120403. The next prime is 126120427. The reversal of 126120407 is 704021621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126120407 - 2² = 126120403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126120403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9008594 + ... + 9008607.

It is an arithmetic number, because the mean of its divisors is an integer number (36034404).

Almost surely, 2^126120407 is an apocalyptic number.

126120407 is a deficient number, since it is larger than the sum of its proper divisors (18017209).

126120407 is an equidigital number, since it uses as much as digits as its factorization.

126120407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18017208.

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

The square root of 126120407 is about 11230.3342336727. The cubic root of 126120407 is about 501.4894347626.

The spelling of 126120407 in words is "one hundred twenty-six million, one hundred twenty thousand, four hundred seven".