1212142 has 8 divisors (see below), whose sum is σ = 1881000. Its totient is φ = 585144.

The previous prime is 1212121. The next prime is 1212149. The reversal of 1212142 is 2412121.

It is a happy number.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212149) 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, 10392 + ... + 10507.

It is an arithmetic number, because the mean of its divisors is an integer number (235125).

2^1212142 is an apocalyptic number.

1212142 is a deficient number, since it is larger than the sum of its proper divisors (668858).

1212142 is a wasteful number, since it uses less digits than its factorization.

1212142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20930.

The product of its digits is 32, while the sum is 13.

The square root of 1212142 is about 1100.9732058502. The cubic root of 1212142 is about 106.6230659477.

Adding to 1212142 its reverse (2412121), we get a palindrome (3624263).

The spelling of 1212142 in words is "one million, two hundred twelve thousand, one hundred forty-two".