126923871 has 4 divisors (see below), whose sum is σ = 169231832. Its totient is φ = 84615912.

The previous prime is 126923869. The next prime is 126923873. The reversal of 126923871 is 178329621.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (126923869) and next prime (126923873).

It is not a de Polignac number, because 126923871 - 2¹ = 126923869 is a prime.

It is a super-2 number, since 2×126923871² = 32219338059249282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126923873) 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, 21153976 + ... + 21153981.

It is an arithmetic number, because the mean of its divisors is an integer number (42307958).

Almost surely, 2^126923871 is an apocalyptic number.

126923871 is a deficient number, since it is larger than the sum of its proper divisors (42307961).

126923871 is an equidigital number, since it uses as much as digits as its factorization.

126923871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42307960.

The product of its digits is 36288, while the sum is 39.

The square root of 126923871 is about 11266.0494850680. The cubic root of 126923871 is about 502.5521126123.

The spelling of 126923871 in words is "one hundred twenty-six million, nine hundred twenty-three thousand, eight hundred seventy-one".