126751123 has 2 divisors, whose sum is σ = 126751124. Its totient is φ = 126751122.

The previous prime is 126751103. The next prime is 126751187. The reversal of 126751123 is 321157621.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (321157621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126751123 is a prime.

It is a super-2 number, since 2×126751123² = 32131694363522258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126751091 and 126751100.

It is not a weakly prime, because it can be changed into another prime (126751103) 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 as a sum of consecutive naturals, namely, 63375561 + 63375562.

It is an arithmetic number, because the mean of its divisors is an integer number (63375562).

Almost surely, 2^126751123 is an apocalyptic number.

126751123 is a deficient number, since it is larger than the sum of its proper divisors (1).

126751123 is an equidigital number, since it uses as much as digits as its factorization.

126751123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 126751123 is about 11258.3801232682. The cubic root of 126751123 is about 502.3240118683.

The spelling of 126751123 in words is "one hundred twenty-six million, seven hundred fifty-one thousand, one hundred twenty-three".