1142356523 has 24 divisors (see below), whose sum is σ = 1437574656. Its totient is φ = 888568560.

The previous prime is 1142356493. The next prime is 1142356597. The reversal of 1142356523 is 3256532411.

It is a happy number.

It is not a de Polignac number, because 1142356523 - 2¹⁶ = 1142290987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1142356523.

It is not an unprimeable number, because it can be changed into a prime (1142356723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 767486 + ... + 768972.

It is an arithmetic number, because the mean of its divisors is an integer number (59898944).

Almost surely, 2^1142356523 is an apocalyptic number.

1142356523 is a deficient number, since it is larger than the sum of its proper divisors (295218133).

1142356523 is a wasteful number, since it uses less digits than its factorization.

1142356523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423 (or 2412 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 1142356523 is about 33798.7651105776. The cubic root of 1142356523 is about 1045.3632347616.

Adding to 1142356523 its reverse (3256532411), we get a palindrome (4398888934).

The spelling of 1142356523 in words is "one billion, one hundred forty-two million, three hundred fifty-six thousand, five hundred twenty-three".