1923020121 has 8 divisors (see below), whose sum is σ = 2797120224. Its totient is φ = 1165466720.

The previous prime is 1923020119. The next prime is 1923020137. The reversal of 1923020121 is 1210203291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1923020121 - 2¹ = 1923020119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1923020221) 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 7 ways as a sum of consecutive naturals, for example, 29136636 + ... + 29136701.

It is an arithmetic number, because the mean of its divisors is an integer number (349640028).

Almost surely, 2^1923020121 is an apocalyptic number.

1923020121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1923020121 is a deficient number, since it is larger than the sum of its proper divisors (874100103).

1923020121 is a wasteful number, since it uses less digits than its factorization.

1923020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58273351.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1923020121 is about 43852.2533172470. The cubic root of 1923020121 is about 1243.5443428012.

The spelling of 1923020121 in words is "one billion, nine hundred twenty-three million, twenty thousand, one hundred twenty-one".