992121 has 8 divisors (see below), whose sum is σ = 1424640. Its totient is φ = 610512.

The previous prime is 992113. The next prime is 992129. The reversal of 992121 is 121299.

It is an interprime number because it is at equal distance from previous prime (992113) and next prime (992129).

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

It is not a de Polignac number, because 992121 - 2³ = 992113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 992091 and 992100.

It is not an unprimeable number, because it can be changed into a prime (992129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12681 + ... + 12758.

It is an arithmetic number, because the mean of its divisors is an integer number (178080).

2⁹⁹²¹²¹ is an apocalyptic number.

It is an amenable number.

992121 is a deficient number, since it is larger than the sum of its proper divisors (432519).

992121 is a wasteful number, since it uses less digits than its factorization.

992121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25455.

The product of its digits is 324, while the sum is 24.

The square root of 992121 is about 996.0527094487. The cubic root of 992121 is about 99.7366738688.

The spelling of 992121 in words is "nine hundred ninety-two thousand, one hundred twenty-one".