1157070123 has 24 divisors (see below), whose sum is σ = 1884184400. Its totient is φ = 701252640.

The previous prime is 1157070097. The next prime is 1157070137. The reversal of 1157070123 is 3210707511.

It is a happy number.

1157070123 is a `hidden beast` number, since 1 + 1 + 570 + 70 + 1 + 23 = 666.

It is not a de Polignac number, because 1157070123 - 2⁹ = 1157069611 is a prime.

It is a super-2 number, since 2×1157070123² = 2677622539078470258, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157070023) 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 23 ways as a sum of consecutive naturals, for example, 173818 + ... + 180351.

Almost surely, 2^1157070123 is an apocalyptic number.

1157070123 is a deficient number, since it is larger than the sum of its proper divisors (727114277).

1157070123 is a wasteful number, since it uses less digits than its factorization.

1157070123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354200 (or 354183 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 1157070123 is about 34015.7334626199. The cubic root of 1157070123 is about 1049.8322099233.

Adding to 1157070123 its reverse (3210707511), we get a palindrome (4367777634).

The spelling of 1157070123 in words is "one billion, one hundred fifty-seven million, seventy thousand, one hundred twenty-three".