1155420204 has 96 divisors (see below), whose sum is σ = 2862397440. Its totient is φ = 362208000.

The previous prime is 1155420199. The next prime is 1155420209. The reversal of 1155420204 is 4020245511.

It is an interprime number because it is at equal distance from previous prime (1155420199) and next prime (1155420209).

It is a super-2 number, since 2×1155420204² = 2669991695622803232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1155420209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2495277 + ... + 2495739.

It is an arithmetic number, because the mean of its divisors is an integer number (29816640).

Almost surely, 2^1155420204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155420204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1431198720).

1155420204 is an abundant number, since it is smaller than the sum of its proper divisors (1706977236).

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

1155420204 is a wasteful number, since it uses less digits than its factorization.

1155420204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1155420204 is about 33991.4725188539. The cubic root of 1155420204 is about 1049.3329713609.

Adding to 1155420204 its reverse (4020245511), we get a palindrome (5175665715).

The spelling of 1155420204 in words is "one billion, one hundred fifty-five million, four hundred twenty thousand, two hundred four".