1006123939 has 4 divisors (see below), whose sum is σ = 1007050624. Its totient is φ = 1005197256.

The previous prime is 1006123919. The next prime is 1006123949. The reversal of 1006123939 is 9393216001.

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

It is a cyclic number.

It is not a de Polignac number, because 1006123939 - 2²⁹ = 469253027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006123919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461712 + ... + 463885.

It is an arithmetic number, because the mean of its divisors is an integer number (251762656).

Almost surely, 2^1006123939 is an apocalyptic number.

1006123939 is a deficient number, since it is larger than the sum of its proper divisors (926685).

1006123939 is an equidigital number, since it uses as much as digits as its factorization.

1006123939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926684.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 1006123939 is about 31719.4567891696. The cubic root of 1006123939 is about 1002.0371601604.

The spelling of 1006123939 in words is "one billion, six million, one hundred twenty-three thousand, nine hundred thirty-nine".