126778156 has 12 divisors (see below), whose sum is σ = 223482168. Its totient is φ = 62926112.

The previous prime is 126778133. The next prime is 126778159. The reversal of 126778156 is 651877621.

It is not an unprimeable number, because it can be changed into a prime (126778159) 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, 115126 + ... + 116221.

It is an arithmetic number, because the mean of its divisors is an integer number (18623514).

Almost surely, 2^126778156 is an apocalyptic number.

It is an amenable number.

126778156 is a deficient number, since it is larger than the sum of its proper divisors (96704012).

126778156 is a wasteful number, since it uses less digits than its factorization.

126778156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231488 (or 231486 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 126778156 is about 11259.5806316221. The cubic root of 126778156 is about 502.3597205847.

The spelling of 126778156 in words is "one hundred twenty-six million, seven hundred seventy-eight thousand, one hundred fifty-six".