126223965 has 24 divisors (see below), whose sum is σ = 250044288. Its totient is φ = 57702240.

The previous prime is 126223939. The next prime is 126223969. The reversal of 126223965 is 569322621.

126223965 is a `hidden beast` number, since 1 + 262 + 2 + 396 + 5 = 666.

It is not a de Polignac number, because 126223965 - 2⁶ = 126223901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126223969) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 200041 + ... + 200670.

It is an arithmetic number, because the mean of its divisors is an integer number (10418512).

Almost surely, 2^126223965 is an apocalyptic number.

126223965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126223965 is a deficient number, since it is larger than the sum of its proper divisors (123820323).

126223965 is a wasteful number, since it uses less digits than its factorization.

126223965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400729 (or 400726 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 126223965 is about 11234.9439250937. The cubic root of 126223965 is about 501.6266555777.

The spelling of 126223965 in words is "one hundred twenty-six million, two hundred twenty-three thousand, nine hundred sixty-five".