1153430442 has 20 divisors (see below), whose sum is σ = 2584538946. Its totient is φ = 384476760.

The previous prime is 1153430419. The next prime is 1153430449. The reversal of 1153430442 is 2440343511.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 959078961 + 194351481 = 30969^2 + 13941^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1153430449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3559809 + ... + 3560132.

Almost surely, 2^1153430442 is an apocalyptic number.

1153430442 is an abundant number, since it is smaller than the sum of its proper divisors (1431108504).

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

1153430442 is an equidigital number, since it uses as much as digits as its factorization.

1153430442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7119955 (or 7119946 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1153430442 is about 33962.1913603937. The cubic root of 1153430442 is about 1048.7302692566.

Adding to 1153430442 its reverse (2440343511), we get a palindrome (3593773953).

The spelling of 1153430442 in words is "one billion, one hundred fifty-three million, four hundred thirty thousand, four hundred forty-two".