142031413 has 4 divisors (see below), whose sum is σ = 150386220. Its totient is φ = 133676608.

The previous prime is 142031399. The next prime is 142031423. The reversal of 142031413 is 314130241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314130241 = 881 ⋅356561.

It can be written as a sum of positive squares in 2 ways, for example, as 103367889 + 38663524 = 10167^2 + 6218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142031413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142031423) 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, 4177378 + ... + 4177411.

It is an arithmetic number, because the mean of its divisors is an integer number (37596555).

Almost surely, 2^142031413 is an apocalyptic number.

It is an amenable number.

142031413 is a deficient number, since it is larger than the sum of its proper divisors (8354807).

142031413 is an equidigital number, since it uses as much as digits as its factorization.

142031413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8354806.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 142031413 is about 11917.6932751267. The cubic root of 142031413 is about 521.7488124181.

Adding to 142031413 its reverse (314130241), we get a palindrome (456161654).

The spelling of 142031413 in words is "one hundred forty-two million, thirty-one thousand, four hundred thirteen".