126610215 has 16 divisors (see below), whose sum is σ = 203793408. Its totient is φ = 67119776.

The previous prime is 126610213. The next prime is 126610273. The reversal of 126610215 is 512016621.

It is a cyclic number.

It is not a de Polignac number, because 126610215 - 2¹ = 126610213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126610213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22767 + ... + 27776.

It is an arithmetic number, because the mean of its divisors is an integer number (12737088).

Almost surely, 2^126610215 is an apocalyptic number.

126610215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

126610215 is a deficient number, since it is larger than the sum of its proper divisors (77183193).

126610215 is a wasteful number, since it uses less digits than its factorization.

126610215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50718.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 126610215 is about 11252.1204668276. The cubic root of 126610215 is about 502.1377999294.

Adding to 126610215 its reverse (512016621), we get a palindrome (638626836).

The spelling of 126610215 in words is "one hundred twenty-six million, six hundred ten thousand, two hundred fifteen".