1942420 has 48 divisors (see below), whose sum is σ = 4490640. Its totient is φ = 702464.

The previous prime is 1942417. The next prime is 1942433. The reversal of 1942420 is 242491.

It can be written as a sum of positive squares in 8 ways, for example, as 309136 + 1633284 = 556^2 + 1278^2 .

1942420 is a Rhonda number in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 1942391 and 1942400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9762 + ... + 9958.

It is an arithmetic number, because the mean of its divisors is an integer number (93555).

2^1942420 is an apocalyptic number.

1942420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1942420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2245320).

1942420 is an abundant number, since it is smaller than the sum of its proper divisors (2548220).

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

1942420 is a wasteful number, since it uses less digits than its factorization.

1942420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1942420 is about 1393.7072863410. The cubic root of 1942420 is about 124.7712081565.

The spelling of 1942420 in words is "one million, nine hundred forty-two thousand, four hundred twenty".