1219930 has 8 divisors (see below), whose sum is σ = 2195892. Its totient is φ = 487968.

The previous prime is 1219919. The next prime is 1219931. The reversal of 1219930 is 399121.

It can be written as a sum of positive squares in 2 ways, for example, as 1194649 + 25281 = 1093^2 + 159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1219895 and 1219904.

It is not an unprimeable number, because it can be changed into a prime (1219931) 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, 60987 + ... + 61006.

2^1219930 is an apocalyptic number.

1219930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1219930 is a deficient number, since it is larger than the sum of its proper divisors (975962).

1219930 is a wasteful number, since it uses less digits than its factorization.

1219930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122000.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1219930 is about 1104.5044137531. The cubic root of 1219930 is about 106.8509293397.

The spelling of 1219930 in words is "one million, two hundred nineteen thousand, nine hundred thirty".