1252142 has 8 divisors (see below), whose sum is σ = 1886976. Its totient is φ = 623152.

The previous prime is 1252129. The next prime is 1252151. The reversal of 1252142 is 2412521.

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 1252142.

It is a congruent number.

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, 878 + ... + 1809.

It is an arithmetic number, because the mean of its divisors is an integer number (235872).

2^1252142 is an apocalyptic number.

1252142 is a deficient number, since it is larger than the sum of its proper divisors (634834).

1252142 is a wasteful number, since it uses less digits than its factorization.

1252142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922.

The product of its digits is 160, while the sum is 17.

The square root of 1252142 is about 1118.9915102448. The cubic root of 1252142 is about 107.7832300435.

Adding to 1252142 its reverse (2412521), we get a palindrome (3664663).

The spelling of 1252142 in words is "one million, two hundred fifty-two thousand, one hundred forty-two".