1219972 has 24 divisors (see below), whose sum is σ = 2381400. Its totient is φ = 542976.

The previous prime is 1219963. The next prime is 1219991. The reversal of 1219972 is 2799121.

It can be written as a sum of positive squares in 4 ways, for example, as 207936 + 1012036 = 456^2 + 1006^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104 + ... + 1912.

It is an arithmetic number, because the mean of its divisors is an integer number (99225).

2^1219972 is an apocalyptic number.

It is an amenable number.

1219972 is a deficient number, since it is larger than the sum of its proper divisors (1161428).

1219972 is a wasteful number, since it uses less digits than its factorization.

1219972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855 (or 853 counting only the distinct ones).

The product of its digits is 2268, while the sum is 31.

The square root of 1219972 is about 1104.5234266416. The cubic root of 1219972 is about 106.8521555542.

The spelling of 1219972 in words is "one million, two hundred nineteen thousand, nine hundred seventy-two".