1000420 has 12 divisors (see below), whose sum is σ = 2100924. Its totient is φ = 400160.

The previous prime is 1000409. The next prime is 1000423. The reversal of 1000420 is 240001.

It can be written as a sum of positive squares in 2 ways, for example, as 527076 + 473344 = 726^2 + 688^2 .

It is not an unprimeable number, because it can be changed into a prime (1000423) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 24991 + ... + 25030.

It is an arithmetic number, because the mean of its divisors is an integer number (175077).

2^1000420 is an apocalyptic number.

1000420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000420 is an abundant number, since it is smaller than the sum of its proper divisors (1100504).

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

1000420 is a wasteful number, since it uses less digits than its factorization.

1000420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50030 (or 50028 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 1000420 is about 1000.2099779546. The cubic root of 1000420 is about 100.0139980405.

Adding to 1000420 its reverse (240001), we get a palindrome (1240421).

The spelling of 1000420 in words is "one million, four hundred twenty", and thus it is an aban number.