1216142 has 8 divisors (see below), whose sum is σ = 1868832. Its totient is φ = 593200.

The previous prime is 1216123. The next prime is 1216147. The reversal of 1216142 is 2416121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1216142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216147) 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, 7334 + ... + 7497.

It is an arithmetic number, because the mean of its divisors is an integer number (233604).

2^1216142 is an apocalyptic number.

1216142 is a deficient number, since it is larger than the sum of its proper divisors (652690).

1216142 is a wasteful number, since it uses less digits than its factorization.

1216142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14874.

The product of its digits is 96, while the sum is 17.

The square root of 1216142 is about 1102.7882843048. The cubic root of 1216142 is about 106.7402205353.

The spelling of 1216142 in words is "one million, two hundred sixteen thousand, one hundred forty-two".