126320051 has 8 divisors (see below), whose sum is σ = 148404144. Its totient is φ = 106002720.

The previous prime is 126320039. The next prime is 126320053. The reversal of 126320051 is 150023621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126320051 - 2⁶ = 126319987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126320053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441536 + ... + 441821.

It is an arithmetic number, because the mean of its divisors is an integer number (18550518).

Almost surely, 2^126320051 is an apocalyptic number.

126320051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

126320051 is a deficient number, since it is larger than the sum of its proper divisors (22084093).

126320051 is a wasteful number, since it uses less digits than its factorization.

126320051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883381.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 126320051 is about 11239.2193234228. The cubic root of 126320051 is about 501.7539084167.

Adding to 126320051 its reverse (150023621), we get a palindrome (276343672).

The spelling of 126320051 in words is "one hundred twenty-six million, three hundred twenty thousand, fifty-one".