1229142 has 8 divisors (see below), whose sum is σ = 2458296. Its totient is φ = 409712.

The previous prime is 1229141. The next prime is 1229149. The reversal of 1229142 is 2419221.

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

1229142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229141) 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, 102423 + ... + 102434.

It is an arithmetic number, because the mean of its divisors is an integer number (307287).

2^1229142 is an apocalyptic number.

1229142 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.

1229142 is a wasteful number, since it uses less digits than its factorization.

1229142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204862.

The product of its digits is 288, while the sum is 21.

The square root of 1229142 is about 1108.6667668871. Note that the first 3 decimals coincide. The cubic root of 1229142 is about 107.1192079868.

The spelling of 1229142 in words is "one million, two hundred twenty-nine thousand, one hundred forty-two".