134221515 has 8 divisors (see below), whose sum is σ = 214754448. Its totient is φ = 71584800.

The previous prime is 134221501. The next prime is 134221603. The reversal of 134221515 is 515122431.

It is a happy number.

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

It is not a de Polignac number, because 134221515 - 2⁸ = 134221259 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4474036 + ... + 4474065.

It is an arithmetic number, because the mean of its divisors is an integer number (26844306).

Almost surely, 2^134221515 is an apocalyptic number.

134221515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

134221515 is a deficient number, since it is larger than the sum of its proper divisors (80532933).

134221515 is an equidigital number, since it uses as much as digits as its factorization.

134221515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8948109.

The product of its digits is 1200, while the sum is 24.

The square root of 134221515 is about 11585.4009425656. The cubic root of 134221515 is about 512.0048153742.

Adding to 134221515 its reverse (515122431), we get a palindrome (649343946).

The spelling of 134221515 in words is "one hundred thirty-four million, two hundred twenty-one thousand, five hundred fifteen".