1224971029 has 4 divisors (see below), whose sum is σ = 1226200684. Its totient is φ = 1223741376.

The previous prime is 1224970987. The next prime is 1224971071. The reversal of 1224971029 is 9201794221.

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

It is an interprime number because it is at equal distance from previous prime (1224970987) and next prime (1224971071).

It can be written as a sum of positive squares in 2 ways, for example, as 690112900 + 534858129 = 26270^2 + 23127^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224971029 - 2¹⁵ = 1224938261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224971729) 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, 613332 + ... + 615325.

It is an arithmetic number, because the mean of its divisors is an integer number (306550171).

Almost surely, 2^1224971029 is an apocalyptic number.

It is an amenable number.

1224971029 is a deficient number, since it is larger than the sum of its proper divisors (1229655).

1224971029 is an equidigital number, since it uses as much as digits as its factorization.

1224971029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229654.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1224971029 is about 34999.5861261244. The cubic root of 1224971029 is about 1069.9790455034.

The spelling of 1224971029 in words is "one billion, two hundred twenty-four million, nine hundred seventy-one thousand, twenty-nine".