1216029 has 4 divisors (see below), whose sum is σ = 1621376. Its totient is φ = 810684.

The previous prime is 1216021. The next prime is 1216043. The reversal of 1216029 is 9206121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1216029 - 2³ = 1216021 is a prime.

It is a D-number.

It is a Duffinian number.

1216029 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1215996 and 1216014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202669 + ... + 202674.

It is an arithmetic number, because the mean of its divisors is an integer number (405344).

2^1216029 is an apocalyptic number.

It is an amenable number.

1216029 is a deficient number, since it is larger than the sum of its proper divisors (405347).

1216029 is an equidigital number, since it uses as much as digits as its factorization.

1216029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405346.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1216029 is about 1102.7370493459. The cubic root of 1216029 is about 106.7369144470.

The spelling of 1216029 in words is "one million, two hundred sixteen thousand, twenty-nine".