126043303778 has 12 divisors (see below), whose sum is σ = 219932703702. Its totient is φ = 54018558720.

The previous prime is 126043303769. The next prime is 126043303801. The reversal of 126043303778 is 877303340621.

It can be written as a sum of positive squares in only one way, i.e., 124769313529 + 1273990249 = 353227^2 + 35693^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 643077983 + ... + 643078178.

Almost surely, 2^126043303778 is an apocalyptic number.

126043303778 is a deficient number, since it is larger than the sum of its proper divisors (93889399924).

126043303778 is a wasteful number, since it uses less digits than its factorization.

126043303778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286156177 (or 1286156170 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 44.

The spelling of 126043303778 in words is "one hundred twenty-six billion, forty-three million, three hundred three thousand, seven hundred seventy-eight".