1001142523 has 8 divisors (see below), whose sum is σ = 1009652400. Its totient is φ = 992664288.

The previous prime is 1001142521. The next prime is 1001142557. The reversal of 1001142523 is 3252411001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001142523 - 2¹ = 1001142521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001142523.

It is not an unprimeable number, because it can be changed into a prime (1001142521) 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 7 ways as a sum of consecutive naturals, for example, 57933 + ... + 73201.

It is an arithmetic number, because the mean of its divisors is an integer number (126206550).

Almost surely, 2^1001142523 is an apocalyptic number.

1001142523 is a deficient number, since it is larger than the sum of its proper divisors (8509877).

1001142523 is a wasteful number, since it uses less digits than its factorization.

1001142523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15821.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1001142523 is about 31640.8363195412. The cubic root of 1001142523 is about 1000.3806960521.

Adding to 1001142523 its reverse (3252411001), we get a palindrome (4253553524).

The spelling of 1001142523 in words is "one billion, one million, one hundred forty-two thousand, five hundred twenty-three".