1157422043 has 4 divisors (see below), whose sum is σ = 1157512800. Its totient is φ = 1157331288.

The previous prime is 1157422037. The next prime is 1157422093. The reversal of 1157422043 is 3402247511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1157422043 - 2¹⁴ = 1157405659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1157421997 and 1157422015.

It is not an unprimeable number, because it can be changed into a prime (1157422093) 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, 22355 + ... + 53052.

It is an arithmetic number, because the mean of its divisors is an integer number (289378200).

Almost surely, 2^1157422043 is an apocalyptic number.

1157422043 is a deficient number, since it is larger than the sum of its proper divisors (90757).

1157422043 is an equidigital number, since it uses as much as digits as its factorization.

1157422043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90756.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1157422043 is about 34020.9059697122. The cubic root of 1157422043 is about 1049.9386337530.

Adding to 1157422043 its reverse (3402247511), we get a palindrome (4559669554).

The spelling of 1157422043 in words is "one billion, one hundred fifty-seven million, four hundred twenty-two thousand, forty-three".