126883621 has 2 divisors, whose sum is σ = 126883622. Its totient is φ = 126883620.

The previous prime is 126883609. The next prime is 126883637. The reversal of 126883621 is 126388621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110481121 + 16402500 = 10511^2 + 4050^2 .

It is an emirp because it is prime and its reverse (126388621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126883621 - 2⁹ = 126883109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126883681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63441810 + 63441811.

It is an arithmetic number, because the mean of its divisors is an integer number (63441811).

Almost surely, 2^126883621 is an apocalyptic number.

It is an amenable number.

126883621 is a deficient number, since it is larger than the sum of its proper divisors (1).

126883621 is an equidigital number, since it uses as much as digits as its factorization.

126883621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 126883621 is about 11264.2630029665. The cubic root of 126883621 is about 502.4989840165.

The spelling of 126883621 in words is "one hundred twenty-six million, eight hundred eighty-three thousand, six hundred twenty-one".