126123015 has 16 divisors (see below), whose sum is σ = 201993696. Its totient is φ = 67200000.

The previous prime is 126122977. The next prime is 126123073. The reversal of 126123015 is 510321621.

It is not a de Polignac number, because 126123015 - 2⁶ = 126122951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126122982 and 126123000.

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 15 ways as a sum of consecutive naturals, for example, 14515 + ... + 21515.

It is an arithmetic number, because the mean of its divisors is an integer number (12624606).

Almost surely, 2^126123015 is an apocalyptic number.

126123015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

126123015 is a deficient number, since it is larger than the sum of its proper divisors (75870681).

126123015 is a wasteful number, since it uses less digits than its factorization.

126123015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8210.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 126123015 is about 11230.4503471588. The cubic root of 126123015 is about 501.4928914473.

Adding to 126123015 its reverse (510321621), we get a palindrome (636444636).

The spelling of 126123015 in words is "one hundred twenty-six million, one hundred twenty-three thousand, fifteen".