126744899401 has 4 divisors (see below), whose sum is σ = 133415683600. Its totient is φ = 120074115204.

The previous prime is 126744899353. The next prime is 126744899461. The reversal of 126744899401 is 104998447621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104998447621 = 107 ⋅981293903.

It is a cyclic number.

It is not a de Polignac number, because 126744899401 - 2³¹ = 124597415753 is a prime.

It is a super-2 number, since 2×126744899401² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126744899461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3335392071 + ... + 3335392108.

It is an arithmetic number, because the mean of its divisors is an integer number (33353920900).

Almost surely, 2^126744899401 is an apocalyptic number.

It is an amenable number.

126744899401 is a deficient number, since it is larger than the sum of its proper divisors (6670784199).

126744899401 is an equidigital number, since it uses as much as digits as its factorization.

126744899401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6670784198.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 126744899401 in words is "one hundred twenty-six billion, seven hundred forty-four million, eight hundred ninety-nine thousand, four hundred one".