9942001 has 4 divisors (see below), whose sum is σ = 9948400. Its totient is φ = 9935604.

The previous prime is 9941977. The next prime is 9942007. The reversal of 9942001 is 1002499.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1002499 = 103 ⋅9733.

It is a cyclic number.

It is not a de Polignac number, because 9942001 - 2⁵ = 9941969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9942007) 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, 790 + ... + 4528.

It is an arithmetic number, because the mean of its divisors is an integer number (2487100).

Almost surely, 2^9942001 is an apocalyptic number.

It is an amenable number.

9942001 is a deficient number, since it is larger than the sum of its proper divisors (6399).

9942001 is a wasteful number, since it uses less digits than its factorization.

9942001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6398.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 9942001 is about 3153.0938774480. The cubic root of 9942001 is about 215.0261442878.

The spelling of 9942001 in words is "nine million, nine hundred forty-two thousand, one".