1220754 has 8 divisors (see below), whose sum is σ = 2441520. Its totient is φ = 406916.

The previous prime is 1220743. The next prime is 1220761. The reversal of 1220754 is 4570221.

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

1220754 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220754.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101724 + ... + 101735.

It is an arithmetic number, because the mean of its divisors is an integer number (305190).

2^1220754 is an apocalyptic number.

1220754 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1220754 is a wasteful number, since it uses less digits than its factorization.

1220754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203464.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1220754 is about 1104.8773687609. The cubic root of 1220754 is about 106.8749813618.

Adding to 1220754 its reverse (4570221), we get a palindrome (5790975).

The spelling of 1220754 in words is "one million, two hundred twenty thousand, seven hundred fifty-four".