1216442 has 8 divisors (see below), whose sum is σ = 1848000. Its totient is φ = 600444.

The previous prime is 1216441. The next prime is 1216451. The reversal of 1216442 is 2446121.

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

It is a super-2 number, since 2×1216442² = 2959462278728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1216441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3692 + ... + 4007.

It is an arithmetic number, because the mean of its divisors is an integer number (231000).

2^1216442 is an apocalyptic number.

1216442 is a deficient number, since it is larger than the sum of its proper divisors (631558).

1216442 is an equidigital number, since it uses as much as digits as its factorization.

1216442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780.

The product of its digits is 384, while the sum is 20.

The square root of 1216442 is about 1102.9242947728. The cubic root of 1216442 is about 106.7489967675.

The spelling of 1216442 in words is "one million, two hundred sixteen thousand, four hundred forty-two".