126415342477 has 4 divisors (see below), whose sum is σ = 126416970396. Its totient is φ = 126413714560.

The previous prime is 126415342399. The next prime is 126415342481. The reversal of 126415342477 is 774243514621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 774243514621 = 681047 ⋅1136843.

It can be written as a sum of positive squares in 2 ways, for example, as 80445409641 + 45969932836 = 283629^2 + 214406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126415342477 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 (126415342177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691318 + ... + 854839.

It is an arithmetic number, because the mean of its divisors is an integer number (31604242599).

Almost surely, 2^126415342477 is an apocalyptic number.

It is an amenable number.

126415342477 is a deficient number, since it is larger than the sum of its proper divisors (1627919).

126415342477 is an equidigital number, since it uses as much as digits as its factorization.

126415342477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627918.

The product of its digits is 1128960, while the sum is 46.

The spelling of 126415342477 in words is "one hundred twenty-six billion, four hundred fifteen million, three hundred forty-two thousand, four hundred seventy-seven".