1012420 has 24 divisors (see below), whose sum is σ = 2145024. Its totient is φ = 401376.

The previous prime is 1012411. The next prime is 1012421. The reversal of 1012420 is 242101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1012397 and 1012406.

It is not an unprimeable number, because it can be changed into a prime (1012421) 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 7 ways as a sum of consecutive naturals, for example, 4347 + ... + 4573.

It is an arithmetic number, because the mean of its divisors is an integer number (89376).

2^1012420 is an apocalyptic number.

1012420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012420 is an abundant number, since it is smaller than the sum of its proper divisors (1132604).

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

1012420 is a wasteful number, since it uses less digits than its factorization.

1012420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1012420 is about 1006.1908367700. The cubic root of 1012420 is about 100.4122977693.

Adding to 1012420 its reverse (242101), we get a palindrome (1254521).

The spelling of 1012420 in words is "one million, twelve thousand, four hundred twenty".