1220430 has 32 divisors (see below), whose sum is σ = 3102624. Its totient is φ = 306176.

The previous prime is 1220423. The next prime is 1220437. The reversal of 1220430 is 340221.

It is an interprime number because it is at equal distance from previous prime (1220423) and next prime (1220437).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687 + ... + 1706.

It is an arithmetic number, because the mean of its divisors is an integer number (96957).

2^1220430 is an apocalyptic number.

1220430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220430 is an abundant number, since it is smaller than the sum of its proper divisors (1882194).

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

1220430 is a wasteful number, since it uses less digits than its factorization.

1220430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1220430 is about 1104.7307364240. The cubic root of 1220430 is about 106.8655253049.

Adding to 1220430 its reverse (340221), we get a palindrome (1560651).

The spelling of 1220430 in words is "one million, two hundred twenty thousand, four hundred thirty".