126813155 has 16 divisors (see below), whose sum is σ = 175089600. Its totient is φ = 86370432.

The previous prime is 126813151. The next prime is 126813221. The reversal of 126813155 is 551318621.

It is a cyclic number.

It is not a de Polignac number, because 126813155 - 2² = 126813151 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (126813151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6944 + ... + 17373.

It is an arithmetic number, because the mean of its divisors is an integer number (10943100).

Almost surely, 2^126813155 is an apocalyptic number.

126813155 is a deficient number, since it is larger than the sum of its proper divisors (48276445).

126813155 is a wasteful number, since it uses less digits than its factorization.

126813155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24478.

The product of its digits is 7200, while the sum is 32.

The square root of 126813155 is about 11261.1347119196. The cubic root of 126813155 is about 502.4059442948.

The spelling of 126813155 in words is "one hundred twenty-six million, eight hundred thirteen thousand, one hundred fifty-five".