126212155 has 32 divisors (see below), whose sum is σ = 170035200. Its totient is φ = 89476992.

The previous prime is 126212153. The next prime is 126212159. The reversal of 126212155 is 551212621.

It is not a de Polignac number, because 126212155 - 2¹ = 126212153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126212153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102081 + ... + 103309.

It is an arithmetic number, because the mean of its divisors is an integer number (5313600).

Almost surely, 2^126212155 is an apocalyptic number.

126212155 is a deficient number, since it is larger than the sum of its proper divisors (43823045).

126212155 is a wasteful number, since it uses less digits than its factorization.

126212155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323.

The product of its digits is 1200, while the sum is 25.

The square root of 126212155 is about 11234.4183205006. The cubic root of 126212155 is about 501.6110103829.

Adding to 126212155 its reverse (551212621), we get a palindrome (677424776).

The spelling of 126212155 in words is "one hundred twenty-six million, two hundred twelve thousand, one hundred fifty-five".