126401533303 has 4 divisors (see below), whose sum is σ = 127158428880. Its totient is φ = 125644637728.

The previous prime is 126401533289. The next prime is 126401533333. The reversal of 126401533303 is 303335104621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303335104621 = 47381 ⋅6402041.

It is a cyclic number.

It is not a de Polignac number, because 126401533303 - 2¹³ = 126401525111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126401533333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378447538 + ... + 378447871.

It is an arithmetic number, because the mean of its divisors is an integer number (31789607220).

Almost surely, 2^126401533303 is an apocalyptic number.

126401533303 is a deficient number, since it is larger than the sum of its proper divisors (756895577).

126401533303 is an equidigital number, since it uses as much as digits as its factorization.

126401533303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756895576.

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 126401533303 its reverse (303335104621), we get a palindrome (429736637924).

The spelling of 126401533303 in words is "one hundred twenty-six billion, four hundred one million, five hundred thirty-three thousand, three hundred three".