1215142 has 8 divisors (see below), whose sum is σ = 1832832. Its totient is φ = 604200.

The previous prime is 1215133. The next prime is 1215157. The reversal of 1215142 is 2415121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1209 + ... + 1972.

It is an arithmetic number, because the mean of its divisors is an integer number (229104).

2^1215142 is an apocalyptic number.

1215142 is a deficient number, since it is larger than the sum of its proper divisors (617690).

1215142 is a wasteful number, since it uses less digits than its factorization.

1215142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374.

The product of its digits is 80, while the sum is 16.

The square root of 1215142 is about 1102.3347948786. The cubic root of 1215142 is about 106.7109560003.

The spelling of 1215142 in words is "one million, two hundred fifteen thousand, one hundred forty-two".