142106031 has 6 divisors (see below), whose sum is σ = 205264280. Its totient is φ = 94737348.

The previous prime is 142106021. The next prime is 142106047. The reversal of 142106031 is 130601241.

It is a happy number.

It is not a de Polignac number, because 142106031 - 2⁶ = 142105967 is a prime.

It is a super-2 number, since 2×142106031² = 40388248093145922, 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 = 142105995 and 142106013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142106021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7894771 + ... + 7894788.

Almost surely, 2^142106031 is an apocalyptic number.

142106031 is a deficient number, since it is larger than the sum of its proper divisors (63158249).

142106031 is a wasteful number, since it uses less digits than its factorization.

142106031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15789565 (or 15789562 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 142106031 is about 11920.8234195462. The cubic root of 142106031 is about 521.8401655356.

Adding to 142106031 its reverse (130601241), we get a palindrome (272707272).

The spelling of 142106031 in words is "one hundred forty-two million, one hundred six thousand, thirty-one".