1220419 has 4 divisors (see below), whose sum is σ = 1237680. Its totient is φ = 1203160.

The previous prime is 1220411. The next prime is 1220423. The reversal of 1220419 is 9140221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220419 - 2³ = 1220411 is a prime.

It is a super-2 number, since 2×1220419² = 2978845071122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220396 and 1220405.

It is not an unprimeable number, because it can be changed into a prime (1220411) 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, 8524 + ... + 8665.

It is an arithmetic number, because the mean of its divisors is an integer number (309420).

2^1220419 is an apocalyptic number.

1220419 is a deficient number, since it is larger than the sum of its proper divisors (17261).

1220419 is an equidigital number, since it uses as much as digits as its factorization.

1220419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17260.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1220419 is about 1104.7257578241. The cubic root of 1220419 is about 106.8652042365.

The spelling of 1220419 in words is "one million, two hundred twenty thousand, four hundred nineteen".