126278233 has 2 divisors, whose sum is σ = 126278234. Its totient is φ = 126278232.

The previous prime is 126278213. The next prime is 126278263. The reversal of 126278233 is 332872621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126157824 + 120409 = 11232^2 + 347^2 .

It is an emirp because it is prime and its reverse (332872621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126278233 - 2²¹ = 124181081 is a prime.

It is not a weakly prime, because it can be changed into another prime (126278203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63139116 + 63139117.

It is an arithmetic number, because the mean of its divisors is an integer number (63139117).

Almost surely, 2^126278233 is an apocalyptic number.

It is an amenable number.

126278233 is a deficient number, since it is larger than the sum of its proper divisors (1).

126278233 is an equidigital number, since it uses as much as digits as its factorization.

126278233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 126278233 is about 11237.3588089017. The cubic root of 126278233 is about 501.6985340968.

The spelling of 126278233 in words is "one hundred twenty-six million, two hundred seventy-eight thousand, two hundred thirty-three".