126590440142549 has 2 divisors, whose sum is σ = 126590440142550. Its totient is φ = 126590440142548.

The previous prime is 126590440142521. The next prime is 126590440142561. The reversal of 126590440142549 is 945241044095621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78871841284324 + 47718598858225 = 8880982^2 + 6907865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126590440142549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126590440142494 and 126590440142503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126590440102549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63295220071274 + 63295220071275.

It is an arithmetic number, because the mean of its divisors is an integer number (63295220071275).

Almost surely, 2^{126590440142549} is an apocalyptic number.

It is an amenable number.

126590440142549 is a deficient number, since it is larger than the sum of its proper divisors (1).

126590440142549 is an equidigital number, since it uses as much as digits as its factorization.

126590440142549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12441600, while the sum is 56.

The spelling of 126590440142549 in words is "one hundred twenty-six trillion, five hundred ninety billion, four hundred forty million, one hundred forty-two thousand, five hundred forty-nine".