1157105123 has 2 divisors, whose sum is σ = 1157105124. Its totient is φ = 1157105122.

The previous prime is 1157105099. The next prime is 1157105129. The reversal of 1157105123 is 3215017511.

It is a strong prime.

It is an emirp because it is prime and its reverse (3215017511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1157105123 - 2²² = 1152910819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1157105092 and 1157105101.

It is not a weakly prime, because it can be changed into another prime (1157105129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578552561 + 578552562.

It is an arithmetic number, because the mean of its divisors is an integer number (578552562).

Almost surely, 2^1157105123 is an apocalyptic number.

1157105123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157105123 is an equidigital number, since it uses as much as digits as its factorization.

1157105123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 1157105123 is about 34016.2479265424. The cubic root of 1157105123 is about 1049.8427952099.

The spelling of 1157105123 in words is "one billion, one hundred fifty-seven million, one hundred five thousand, one hundred twenty-three".