980121 has 4 divisors (see below), whose sum is σ = 1306832. Its totient is φ = 653412.

The previous prime is 980117. The next prime is 980131. The reversal of 980121 is 121089.

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.

It is not a de Polignac number, because 980121 - 2² = 980117 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980131) 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, 163351 + ... + 163356.

It is an arithmetic number, because the mean of its divisors is an integer number (326708).

2⁹⁸⁰¹²¹ is an apocalyptic number.

It is an amenable number.

980121 is a deficient number, since it is larger than the sum of its proper divisors (326711).

980121 is a wasteful number, since it uses less digits than its factorization.

980121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326710.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 980121 is about 990.0106060038. The cubic root of 980121 is about 99.3329266933.

Subtracting from 980121 its sum of digits (21), we obtain a square (980100 = 990²).

The spelling of 980121 in words is "nine hundred eighty thousand, one hundred twenty-one".