126203851 has 2 divisors, whose sum is σ = 126203852. Its totient is φ = 126203850.

The previous prime is 126203761. The next prime is 126203867. The reversal of 126203851 is 158302621.

It is a strong prime.

It is an emirp because it is prime and its reverse (158302621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126203851 - 2¹³ = 126195659 is a prime.

It is not a weakly prime, because it can be changed into another prime (126203881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63101925 + 63101926.

It is an arithmetic number, because the mean of its divisors is an integer number (63101926).

Almost surely, 2^126203851 is an apocalyptic number.

126203851 is a deficient number, since it is larger than the sum of its proper divisors (1).

126203851 is an equidigital number, since it uses as much as digits as its factorization.

126203851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 126203851 is about 11234.0487358743. The cubic root of 126203851 is about 501.6000091467.

It can be divided in two parts, 12620 and 3851, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 126203851 in words is "one hundred twenty-six million, two hundred three thousand, eight hundred fifty-one".