1264215 has 16 divisors (see below), whose sum is σ = 2036736. Its totient is φ = 669600.

The previous prime is 1264213. The next prime is 1264231. The reversal of 1264215 is 5124621.

It is not a de Polignac number, because 1264215 - 2¹ = 1264213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1264191 and 1264200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264213) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3910 + ... + 4220.

It is an arithmetic number, because the mean of its divisors is an integer number (127296).

2^1264215 is an apocalyptic number.

1264215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1264215 is a deficient number, since it is larger than the sum of its proper divisors (772521).

1264215 is a wasteful number, since it uses less digits than its factorization.

1264215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590.

The product of its digits is 480, while the sum is 21.

The square root of 1264215 is about 1124.3731586978. The cubic root of 1264215 is about 108.1285335253.

Adding to 1264215 its reverse (5124621), we get a palindrome (6388836).

The spelling of 1264215 in words is "one million, two hundred sixty-four thousand, two hundred fifteen".