126265699403 has 2 divisors, whose sum is σ = 126265699404. Its totient is φ = 126265699402.

The previous prime is 126265699397. The next prime is 126265699423. The reversal of 126265699403 is 304996562621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126265699403 - 2³⁶ = 57546222667 is a prime.

It is not a weakly prime, because it can be changed into another prime (126265699423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63132849701 + 63132849702.

It is an arithmetic number, because the mean of its divisors is an integer number (63132849702).

Almost surely, 2^126265699403 is an apocalyptic number.

126265699403 is a deficient number, since it is larger than the sum of its proper divisors (1).

126265699403 is an equidigital number, since it uses as much as digits as its factorization.

126265699403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 126265699403 in words is "one hundred twenty-six billion, two hundred sixty-five million, six hundred ninety-nine thousand, four hundred three".