9742091 has 4 divisors (see below), whose sum is σ = 10056384. Its totient is φ = 9427800.

The previous prime is 9742027. The next prime is 9742097. The reversal of 9742091 is 1902479.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1902479 = 307 ⋅6197.

It is a cyclic number.

It is not a de Polignac number, because 9742091 - 2⁶ = 9742027 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9742097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157100 + ... + 157161.

It is an arithmetic number, because the mean of its divisors is an integer number (2514096).

Almost surely, 2^9742091 is an apocalyptic number.

9742091 is a deficient number, since it is larger than the sum of its proper divisors (314293).

9742091 is a wasteful number, since it uses less digits than its factorization.

9742091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314292.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 9742091 is about 3121.2322886962. The cubic root of 9742091 is about 213.5751535740.

The spelling of 9742091 in words is "nine million, seven hundred forty-two thousand, ninety-one".