1229955120 has 120 divisors (see below), whose sum is σ = 4348047600. Its totient is φ = 310722048.

The previous prime is 1229955109. The next prime is 1229955137. The reversal of 1229955120 is 215599221.

It is a happy number.

1229955120 is a `hidden beast` number, since 12 + 2 + 99 + 551 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31275 + ... + 58634.

It is an arithmetic number, because the mean of its divisors is an integer number (36233730).

Almost surely, 2^1229955120 is an apocalyptic number.

1229955120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1229955120 is an abundant number, since it is smaller than the sum of its proper divisors (3118092480).

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

1229955120 is a wasteful number, since it uses less digits than its factorization.

1229955120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89947 (or 89938 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 1229955120 is about 35070.7159892695. The cubic root of 1229955120 is about 1071.4282380189.

The spelling of 1229955120 in words is "one billion, two hundred twenty-nine million, nine hundred fifty-five thousand, one hundred twenty".