126711945 has 80 divisors (see below), whose sum is σ = 241984512. Its totient is φ = 63296640.

The previous prime is 126711943. The next prime is 126711961. The reversal of 126711945 is 549117621.

It is not a de Polignac number, because 126711945 - 2¹ = 126711943 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (15120) is a multiple of the sum of its prime divisors (315).

It is not an unprimeable number, because it can be changed into a prime (126711943) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 568104 + ... + 568326.

Almost surely, 2^126711945 is an apocalyptic number.

126711945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126711945 is a deficient number, since it is larger than the sum of its proper divisors (115272567).

126711945 is a wasteful number, since it uses less digits than its factorization.

126711945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 315 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 126711945 is about 11256.6400404384. The cubic root of 126711945 is about 502.2722514376.

The spelling of 126711945 in words is "one hundred twenty-six million, seven hundred eleven thousand, nine hundred forty-five".