1229015 has 16 divisors (see below), whose sum is σ = 1645920. Its totient is φ = 875520.

The previous prime is 1228993. The next prime is 1229021. The reversal of 1229015 is 5109221.

1229015 = T₁₁₁ + T₁₁₂ + ... + T₂₀₅.

It is not a de Polignac number, because 1229015 - 2⁶ = 1228951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1235 + ... + 1995.

It is an arithmetic number, because the mean of its divisors is an integer number (102870).

2^1229015 is an apocalyptic number.

1229015 is a deficient number, since it is larger than the sum of its proper divisors (416905).

1229015 is a wasteful number, since it uses less digits than its factorization.

1229015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1229015 is about 1108.6094894055. The cubic root of 1229015 is about 107.1155185275.

The spelling of 1229015 in words is "one million, two hundred twenty-nine thousand, fifteen".