1157442403 has 8 divisors (see below), whose sum is σ = 1289458800. Its totient is φ = 1031566368.

The previous prime is 1157442401. The next prime is 1157442413. The reversal of 1157442403 is 3042447511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1157442403 - 2¹ = 1157442401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157442401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1534693 + ... + 1535446.

It is an arithmetic number, because the mean of its divisors is an integer number (161182350).

Almost surely, 2^1157442403 is an apocalyptic number.

1157442403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1157442403 is a deficient number, since it is larger than the sum of its proper divisors (132016397).

1157442403 is a wasteful number, since it uses less digits than its factorization.

1157442403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3070181.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 1157442403 is about 34021.2051961714. The cubic root of 1157442403 is about 1049.9447901432.

Adding to 1157442403 its reverse (3042447511), we get a palindrome (4199889914).

The spelling of 1157442403 in words is "one billion, one hundred fifty-seven million, four hundred forty-two thousand, four hundred three".