1210420 has 12 divisors (see below), whose sum is σ = 2541924. Its totient is φ = 484160.

The previous prime is 1210411. The next prime is 1210427. The reversal of 1210420 is 240121.

It can be written as a sum of positive squares in 2 ways, for example, as 300304 + 910116 = 548^2 + 954^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1210397 and 1210406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30241 + ... + 30280.

It is an arithmetic number, because the mean of its divisors is an integer number (211827).

2^1210420 is an apocalyptic number.

1210420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210420 is an abundant number, since it is smaller than the sum of its proper divisors (1331504).

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

1210420 is a wasteful number, since it uses less digits than its factorization.

1210420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60530 (or 60528 counting only the distinct ones).

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

The square root of 1210420 is about 1100.1908925273. The cubic root of 1210420 is about 106.5725515325.

Adding to 1210420 its reverse (240121), we get a palindrome (1450541).

Subtracting from 1210420 its reverse (240121), we obtain a cube (970299 = 99³).

The spelling of 1210420 in words is "one million, two hundred ten thousand, four hundred twenty".