126001215 has 48 divisors (see below), whose sum is σ = 224078400. Its totient is φ = 65479680.

The previous prime is 126001207. The next prime is 126001277. The reversal of 126001215 is 512100621.

It is not a de Polignac number, because 126001215 - 2³ = 126001207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 360861 + ... + 361209.

It is an arithmetic number, because the mean of its divisors is an integer number (4668300).

Almost surely, 2^126001215 is an apocalyptic number.

126001215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

126001215 is a deficient number, since it is larger than the sum of its proper divisors (98077185).

126001215 is a wasteful number, since it uses less digits than its factorization.

126001215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 126001215 is about 11225.0262805928. The cubic root of 126001215 is about 501.3314049085.

Adding to 126001215 its reverse (512100621), we get a palindrome (638101836).

The spelling of 126001215 in words is "one hundred twenty-six million, one thousand, two hundred fifteen".