9428068121 has 4 divisors (see below), whose sum is σ = 9658021044. Its totient is φ = 9198115200.

The previous prime is 9428068079. The next prime is 9428068127. The reversal of 9428068121 is 1218608249.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1298521225 + 8129546896 = 36035^2 + 90164^2 .

It is a cyclic number.

It is not a de Polignac number, because 9428068121 - 2³⁰ = 8354326297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 229952881 = 9428068121 / (9 + 4 + 2 + 8 + 0 + 6 + 8 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9428068127) 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, 114976400 + ... + 114976481.

It is an arithmetic number, because the mean of its divisors is an integer number (2414505261).

Almost surely, 2^9428068121 is an apocalyptic number.

It is an amenable number.

9428068121 is a deficient number, since it is larger than the sum of its proper divisors (229952923).

9428068121 is a wasteful number, since it uses less digits than its factorization.

9428068121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229952922.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 9428068121 is about 97098.2395360493. The cubic root of 9428068121 is about 2112.5527918182.

The spelling of 9428068121 in words is "nine billion, four hundred twenty-eight million, sixty-eight thousand, one hundred twenty-one".