126401651 has 2 divisors, whose sum is σ = 126401652. Its totient is φ = 126401650.

The previous prime is 126401641. The next prime is 126401677. The reversal of 126401651 is 156104621.

It is an a-pointer prime, because the next prime (126401677) can be obtained adding 126401651 to its sum of digits (26).

It is a weak prime.

It is an emirp because it is prime and its reverse (156104621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126401651 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126401651.

It is not a weakly prime, because it can be changed into another prime (126401641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63200825 + 63200826.

It is an arithmetic number, because the mean of its divisors is an integer number (63200826).

Almost surely, 2^126401651 is an apocalyptic number.

126401651 is a deficient number, since it is larger than the sum of its proper divisors (1).

126401651 is an equidigital number, since it uses as much as digits as its factorization.

126401651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 126401651 is about 11242.8488827343. The cubic root of 126401651 is about 501.8619258577.

The spelling of 126401651 in words is "one hundred twenty-six million, four hundred one thousand, six hundred fifty-one".