126431402366 has 4 divisors (see below), whose sum is σ = 189647103552. Its totient is φ = 63215701182.

The previous prime is 126431402311. The next prime is 126431402369. The reversal of 126431402366 is 663204134621.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126431402369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31607850590 + ... + 31607850593.

It is an arithmetic number, because the mean of its divisors is an integer number (47411775888).

Almost surely, 2^126431402366 is an apocalyptic number.

126431402366 is a deficient number, since it is larger than the sum of its proper divisors (63215701186).

126431402366 is an equidigital number, since it uses as much as digits as its factorization.

126431402366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63215701185.

The product of its (nonzero) digits is 124416, while the sum is 38.

Adding to 126431402366 its reverse (663204134621), we get a palindrome (789635536987).

The spelling of 126431402366 in words is "one hundred twenty-six billion, four hundred thirty-one million, four hundred two thousand, three hundred sixty-six".