1153045420 has 12 divisors (see below), whose sum is σ = 2421395424. Its totient is φ = 461218160.

The previous prime is 1153045409. The next prime is 1153045427. The reversal of 1153045420 is 245403511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1153045427) 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, 28826116 + ... + 28826155.

It is an arithmetic number, because the mean of its divisors is an integer number (201782952).

Almost surely, 2^1153045420 is an apocalyptic number.

1153045420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153045420 is an abundant number, since it is smaller than the sum of its proper divisors (1268350004).

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

1153045420 is a wasteful number, since it uses less digits than its factorization.

1153045420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57652280 (or 57652278 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1153045420 is about 33956.5224956856. The cubic root of 1153045420 is about 1048.6135654520.

Adding to 1153045420 its reverse (245403511), we get a palindrome (1398448931).

The spelling of 1153045420 in words is "one billion, one hundred fifty-three million, forty-five thousand, four hundred twenty".