921942 has 48 divisors (see below), whose sum is σ = 2376192. Its totient is φ = 262440.

The previous prime is 921931. The next prime is 921959. The reversal of 921942 is 249129.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3267 + ... + 3537.

It is an arithmetic number, because the mean of its divisors is an integer number (49504).

2⁹²¹⁹⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 921942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188096).

921942 is an abundant number, since it is smaller than the sum of its proper divisors (1454250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

921942 is a wasteful number, since it uses less digits than its factorization.

921942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 283 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 921942 is about 960.1781084778. The cubic root of 921942 is about 97.3272681319.

It can be divided in two parts, 9219 and 42, that added together give a cube (9261 = 21³).

The spelling of 921942 in words is "nine hundred twenty-one thousand, nine hundred forty-two".