1142511123 has 32 divisors (see below), whose sum is σ = 1701446656. Its totient is φ = 677351808.

The previous prime is 1142511121. The next prime is 1142511127. The reversal of 1142511123 is 3211152411.

It is not a de Polignac number, because 1142511123 - 2¹ = 1142511121 is a prime.

It is a super-2 number, since 2×1142511123² = 2610663332357442258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1142511123.

It is not an unprimeable number, because it can be changed into a prime (1142511121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144786 + ... + 152472.

It is an arithmetic number, because the mean of its divisors is an integer number (53170208).

Almost surely, 2^1142511123 is an apocalyptic number.

1142511123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1142511123 is a deficient number, since it is larger than the sum of its proper divisors (558935533).

1142511123 is a wasteful number, since it uses less digits than its factorization.

1142511123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7843.

The product of its digits is 240, while the sum is 21.

The square root of 1142511123 is about 33801.0520990102. The cubic root of 1142511123 is about 1045.4103904621.

Adding to 1142511123 its reverse (3211152411), we get a palindrome (4353663534).

The spelling of 1142511123 in words is "one billion, one hundred forty-two million, five hundred eleven thousand, one hundred twenty-three".