142001023 has 16 divisors (see below), whose sum is σ = 150660000. Its totient is φ = 133635712.

The previous prime is 142001021. The next prime is 142001029. The reversal of 142001023 is 320100241.

It is not a de Polignac number, because 142001023 - 2¹ = 142001021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142000994 and 142001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142001021) 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, 254661 + ... + 255217.

It is an arithmetic number, because the mean of its divisors is an integer number (9416250).

Almost surely, 2^142001023 is an apocalyptic number.

142001023 is a deficient number, since it is larger than the sum of its proper divisors (8658977).

142001023 is a wasteful number, since it uses less digits than its factorization.

142001023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 142001023 is about 11916.4182118622. The cubic root of 142001023 is about 521.7115974642.

Adding to 142001023 its reverse (320100241), we get a palindrome (462101264).

The spelling of 142001023 in words is "one hundred forty-two million, one thousand, twenty-three".