126727621 has 2 divisors, whose sum is σ = 126727622. Its totient is φ = 126727620.

The previous prime is 126727609. The next prime is 126727633.

126727621 is nontrivially palindromic in base 10.

It is a balanced prime because it is at equal distance from previous prime (126727609) and next prime (126727633).

It can be written as a sum of positive squares in only one way, i.e., 81703521 + 45024100 = 9039^2 + 6710^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 126727621 - 2¹³ = 126719429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126727661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63363810 + 63363811.

It is an arithmetic number, because the mean of its divisors is an integer number (63363811).

Almost surely, 2^126727621 is an apocalyptic number.

It is an amenable number.

126727621 is a deficient number, since it is larger than the sum of its proper divisors (1).

126727621 is an equidigital number, since it uses as much as digits as its factorization.

126727621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 34.

The square root of 126727621 is about 11257.3363190410. The cubic root of 126727621 is about 502.2929632317.

The spelling of 126727621 in words is "one hundred twenty-six million, seven hundred twenty-seven thousand, six hundred twenty-one".