1215146 has 4 divisors (see below), whose sum is σ = 1822722. Its totient is φ = 607572.

The previous prime is 1215133. The next prime is 1215157. The reversal of 1215146 is 6415121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 703921 + 511225 = 839^2 + 715^2 .

It is a Curzon number.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303785 + ... + 303788.

2^1215146 is an apocalyptic number.

1215146 is a deficient number, since it is larger than the sum of its proper divisors (607576).

1215146 is an equidigital number, since it uses as much as digits as its factorization.

1215146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607575.

The product of its digits is 240, while the sum is 20.

The square root of 1215146 is about 1102.3366092079. The cubic root of 1215146 is about 106.7110730904.

The spelling of 1215146 in words is "one million, two hundred fifteen thousand, one hundred forty-six".