126778018 has 16 divisors (see below), whose sum is σ = 196945056. Its totient is φ = 61165440.

The previous prime is 126777997. The next prime is 126778031. The reversal of 126778018 is 810877621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1743 + ... + 16018.

It is an arithmetic number, because the mean of its divisors is an integer number (12309066).

Almost surely, 2^126778018 is an apocalyptic number.

126778018 is a deficient number, since it is larger than the sum of its proper divisors (70167038).

126778018 is a wasteful number, since it uses less digits than its factorization.

126778018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17889.

The product of its (nonzero) digits is 37632, while the sum is 40.

The square root of 126778018 is about 11259.5745035059. The cubic root of 126778018 is about 502.3595383092.

The spelling of 126778018 in words is "one hundred twenty-six million, seven hundred seventy-eight thousand, eighteen".