126142502251 has 2 divisors, whose sum is σ = 126142502252. Its totient is φ = 126142502250.

The previous prime is 126142502243. The next prime is 126142502293. The reversal of 126142502251 is 152205241621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126142502251 - 2³ = 126142502243 is a prime.

It is not a weakly prime, because it can be changed into another prime (126142502201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63071251125 + 63071251126.

It is an arithmetic number, because the mean of its divisors is an integer number (63071251126).

Almost surely, 2^126142502251 is an apocalyptic number.

126142502251 is a deficient number, since it is larger than the sum of its proper divisors (1).

126142502251 is an equidigital number, since it uses as much as digits as its factorization.

126142502251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 126142502251 its reverse (152205241621), we get a palindrome (278347743872).

The spelling of 126142502251 in words is "one hundred twenty-six billion, one hundred forty-two million, five hundred two thousand, two hundred fifty-one".