1229102340 has 24 divisors (see below), whose sum is σ = 3441486720. Its totient is φ = 327760608.

The previous prime is 1229102333. The next prime is 1229102351. The reversal of 1229102340 is 432019221.

It is a self number, because there is not a number n which added to its sum of digits gives 1229102340.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10242460 + ... + 10242579.

It is an arithmetic number, because the mean of its divisors is an integer number (143395280).

Almost surely, 2^1229102340 is an apocalyptic number.

1229102340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1229102340 is an abundant number, since it is smaller than the sum of its proper divisors (2212384380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1229102340 is a wasteful number, since it uses less digits than its factorization.

1229102340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20485051 (or 20485049 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1229102340 is about 35058.5558744224. Note that the first 3 decimals coincide. The cubic root of 1229102340 is about 1071.1805585693.

It can be divided in two parts, 122910 and 2340, that added together give a triangular number (125250 = T₅₀₀).

The spelling of 1229102340 in words is "one billion, two hundred twenty-nine million, one hundred two thousand, three hundred forty".