126755215 has 4 divisors (see below), whose sum is σ = 152106264. Its totient is φ = 101404168.

The previous prime is 126755191. The next prime is 126755219. The reversal of 126755215 is 512557621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512557621 = 20021 ⋅25601.

It is a cyclic number.

It is not a de Polignac number, because 126755215 - 2⁵ = 126755183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126755219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12675517 + ... + 12675526.

It is an arithmetic number, because the mean of its divisors is an integer number (38026566).

Almost surely, 2^126755215 is an apocalyptic number.

126755215 is a deficient number, since it is larger than the sum of its proper divisors (25351049).

126755215 is an equidigital number, since it uses as much as digits as its factorization.

126755215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25351048.

The product of its digits is 21000, while the sum is 34.

The square root of 126755215 is about 11258.5618530965. The cubic root of 126755215 is about 502.3294174423.

The spelling of 126755215 in words is "one hundred twenty-six million, seven hundred fifty-five thousand, two hundred fifteen".