1220373 has 32 divisors (see below), whose sum is σ = 2257920. Its totient is φ = 632880.

The previous prime is 1220369. The next prime is 1220393. The reversal of 1220373 is 3730221.

It is not a de Polignac number, because 1220373 - 2² = 1220369 is a prime.

1220373 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220333) 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 31 ways as a sum of consecutive naturals, for example, 1786 + ... + 2372.

It is an arithmetic number, because the mean of its divisors is an integer number (70560).

2^1220373 is an apocalyptic number.

It is an amenable number.

1220373 is a deficient number, since it is larger than the sum of its proper divisors (1037547).

1220373 is a wasteful number, since it uses less digits than its factorization.

1220373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 1220373 is about 1104.7049379812. The cubic root of 1220373 is about 106.8638615662.

Adding to 1220373 its reverse (3730221), we get a palindrome (4950594).

The spelling of 1220373 in words is "one million, two hundred twenty thousand, three hundred seventy-three".