121390 has 16 divisors (see below), whose sum is σ = 223200. Its totient is φ = 47520.

The previous prime is 121379. The next prime is 121403. The reversal of 121390 is 93121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511 + ... + 709.

It is an arithmetic number, because the mean of its divisors is an integer number (13950).

2¹²¹³⁹⁰ is an apocalyptic number.

121390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121390 is a deficient number, since it is larger than the sum of its proper divisors (101810).

121390 is a wasteful number, since it uses less digits than its factorization.

121390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 121390 is about 348.4106772187. The cubic root of 121390 is about 49.5139572246.

The spelling of 121390 in words is "one hundred twenty-one thousand, three hundred ninety".