126438945 has 24 divisors (see below), whose sum is σ = 214909824. Its totient is φ = 63465216.

The previous prime is 126438943. The next prime is 126438967. The reversal of 126438945 is 549834621.

It is not a de Polignac number, because 126438945 - 2¹ = 126438943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126438897 and 126438906.

It is not an unprimeable number, because it can be changed into a prime (126438943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10249 + ... + 18918.

It is an arithmetic number, because the mean of its divisors is an integer number (8954576).

Almost surely, 2^126438945 is an apocalyptic number.

126438945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126438945 is a deficient number, since it is larger than the sum of its proper divisors (88470879).

126438945 is a wasteful number, since it uses less digits than its factorization.

126438945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29209 (or 29192 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 126438945 is about 11244.5073258013. The cubic root of 126438945 is about 501.9112780566.

The spelling of 126438945 in words is "one hundred twenty-six million, four hundred thirty-eight thousand, nine hundred forty-five".