1201134123 has 64 divisors (see below), whose sum is σ = 2068971520. Its totient is φ = 674575776.

The previous prime is 1201134101. The next prime is 1201134157. The reversal of 1201134123 is 3214311021.

It is not a de Polignac number, because 1201134123 - 2⁸ = 1201133867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201134096 and 1201134105.

It is not an unprimeable number, because it can be changed into a prime (1201134163) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3912336 + ... + 3912642.

It is an arithmetic number, because the mean of its divisors is an integer number (32327680).

Almost surely, 2^1201134123 is an apocalyptic number.

1201134123 is a deficient number, since it is larger than the sum of its proper divisors (867837397).

1201134123 is a wasteful number, since it uses less digits than its factorization.

1201134123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1201134123 is about 34657.3819409372. The cubic root of 1201134123 is about 1062.9932375296.

Adding to 1201134123 its reverse (3214311021), we get a palindrome (4415445144).

The spelling of 1201134123 in words is "one billion, two hundred one million, one hundred thirty-four thousand, one hundred twenty-three".