126000051 has 4 divisors (see below), whose sum is σ = 168000072. Its totient is φ = 84000032.

The previous prime is 126000037. The next prime is 126000053. The reversal of 126000051 is 150000621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150000621 = 3 ⋅50000207.

It is a cyclic number.

It is not a de Polignac number, because 126000051 - 2¹¹ = 125998003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126000053) 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, 21000006 + ... + 21000011.

It is an arithmetic number, because the mean of its divisors is an integer number (42000018).

Almost surely, 2^126000051 is an apocalyptic number.

126000051 is a deficient number, since it is larger than the sum of its proper divisors (42000021).

126000051 is an equidigital number, since it uses as much as digits as its factorization.

126000051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42000020.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 126000051 is about 11224.9744320422. The cubic root of 126000051 is about 501.3298611362.

Adding to 126000051 its reverse (150000621), we get a palindrome (276000672).

The spelling of 126000051 in words is "one hundred twenty-six million, fifty-one", and thus it is an aban number.