1229061285 has 24 divisors (see below), whose sum is σ = 2140485984. Its totient is φ = 652387680.

The previous prime is 1229061277. The next prime is 1229061287. The reversal of 1229061285 is 5821609221.

1229061285 is a `hidden beast` number, since 12 + 29 + 0 + 612 + 8 + 5 = 666.

It is not a de Polignac number, because 1229061285 - 2³ = 1229061277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229061287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55227 + ... + 74216.

It is an arithmetic number, because the mean of its divisors is an integer number (89186916).

Almost surely, 2^1229061285 is an apocalyptic number.

1229061285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1229061285 is a deficient number, since it is larger than the sum of its proper divisors (911424699).

1229061285 is a wasteful number, since it uses less digits than its factorization.

1229061285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129665 (or 129662 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1229061285 is about 35057.9703491232. The cubic root of 1229061285 is about 1071.1686317601.

The spelling of 1229061285 in words is "one billion, two hundred twenty-nine million, sixty-one thousand, two hundred eighty-five".