126590491 has 2 divisors, whose sum is σ = 126590492. Its totient is φ = 126590490.

The previous prime is 126590441. The next prime is 126590543. The reversal of 126590491 is 194095621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126590491 - 2¹³ = 126582299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126590491.

It is not a weakly prime, because it can be changed into another prime (126590441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63295245 + 63295246.

It is an arithmetic number, because the mean of its divisors is an integer number (63295246).

Almost surely, 2^126590491 is an apocalyptic number.

126590491 is a deficient number, since it is larger than the sum of its proper divisors (1).

126590491 is an equidigital number, since it uses as much as digits as its factorization.

126590491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 126590491 is about 11251.2439756678. The cubic root of 126590491 is about 502.1117233596. Note that the first 3 decimals are identical.

The spelling of 126590491 in words is "one hundred twenty-six million, five hundred ninety thousand, four hundred ninety-one".