1220402 has 8 divisors (see below), whose sum is σ = 1869696. Its totient is φ = 597172.

The previous prime is 1220393. The next prime is 1220411. The reversal of 1220402 is 2040221.

It is an interprime number because it is at equal distance from previous prime (1220393) and next prime (1220411).

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

It is an unprimeable number.

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, 6398 + ... + 6585.

It is an arithmetic number, because the mean of its divisors is an integer number (233712).

2^1220402 is an apocalyptic number.

1220402 is a deficient number, since it is larger than the sum of its proper divisors (649294).

1220402 is a wasteful number, since it uses less digits than its factorization.

1220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13032.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1220402 is about 1104.7180635800. The cubic root of 1220402 is about 106.8647080362.

Adding to 1220402 its reverse (2040221), we get a palindrome (3260623).

The spelling of 1220402 in words is "one million, two hundred twenty thousand, four hundred two".