1011142123 has 16 divisors (see below), whose sum is σ = 1089478656. Its totient is φ = 936048960.

The previous prime is 1011142117. The next prime is 1011142127. The reversal of 1011142123 is 3212411101.

It is a cyclic number.

It is not a de Polignac number, because 1011142123 - 2²⁵ = 977587691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011142097 and 1011142106.

It is not an unprimeable number, because it can be changed into a prime (1011142127) 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 15 ways as a sum of consecutive naturals, for example, 115540 + ... + 123982.

It is an arithmetic number, because the mean of its divisors is an integer number (68092416).

Almost surely, 2^1011142123 is an apocalyptic number.

1011142123 is a deficient number, since it is larger than the sum of its proper divisors (78336533).

1011142123 is a wasteful number, since it uses less digits than its factorization.

1011142123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8634.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1011142123 is about 31798.4610162190. The cubic root of 1011142123 is about 1003.7003316568.

Adding to 1011142123 its reverse (3212411101), we get a palindrome (4223553224).

The spelling of 1011142123 in words is "one billion, eleven million, one hundred forty-two thousand, one hundred twenty-three".