442940 has 12 divisors (see below), whose sum is σ = 930216. Its totient is φ = 177168.

The previous prime is 442919. The next prime is 442961. The reversal of 442940 is 49244.

442940 = T₁₈₀ + T₁₈₁ + ... + T₂₀₃.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (442919) and next prime (442961).

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

442940 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11054 + ... + 11093.

It is an arithmetic number, because the mean of its divisors is an integer number (77518).

2⁴⁴²⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

442940 is an abundant number, since it is smaller than the sum of its proper divisors (487276).

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

442940 is a wasteful number, since it uses less digits than its factorization.

442940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22156 (or 22154 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 442940 is about 665.5373768617. The cubic root of 442940 is about 76.2280775462.

The spelling of 442940 in words is "four hundred forty-two thousand, nine hundred forty".