142001031 has 4 divisors (see below), whose sum is σ = 189334712. Its totient is φ = 94667352.

The previous prime is 142001029. The next prime is 142001033. The reversal of 142001031 is 130100241.

It is a happy number.

142001031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (142001029) and next prime (142001033).

It is not a de Polignac number, because 142001031 - 2¹ = 142001029 is a prime.

It is a super-2 number, since 2×142001031² = 40328585610125922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142000998 and 142001016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142001033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23666836 + ... + 23666841.

It is an arithmetic number, because the mean of its divisors is an integer number (47333678).

Almost surely, 2^142001031 is an apocalyptic number.

142001031 is a deficient number, since it is larger than the sum of its proper divisors (47333681).

142001031 is an equidigital number, since it uses as much as digits as its factorization.

142001031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47333680.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 142001031 is about 11916.4185475335. The cubic root of 142001031 is about 521.7116072616.

Adding to 142001031 its reverse (130100241), we get a palindrome (272101272).

The spelling of 142001031 in words is "one hundred forty-two million, one thousand, thirty-one".