142134631 has 2 divisors, whose sum is σ = 142134632. Its totient is φ = 142134630.

The previous prime is 142134617. The next prime is 142134653. The reversal of 142134631 is 136431241.

It is a weak prime.

It is an emirp because it is prime and its reverse (136431241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142134631 - 2¹⁷ = 142003559 is a prime.

It is a super-2 number, since 2×142134631² = 40404506659012322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142134596 and 142134605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142134731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71067315 + 71067316.

It is an arithmetic number, because the mean of its divisors is an integer number (71067316).

Almost surely, 2^142134631 is an apocalyptic number.

142134631 is a deficient number, since it is larger than the sum of its proper divisors (1).

142134631 is an equidigital number, since it uses as much as digits as its factorization.

142134631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 142134631 is about 11922.0229407597. The cubic root of 142134631 is about 521.8751713865.

Adding to 142134631 its reverse (136431241), we get a palindrome (278565872).

The spelling of 142134631 in words is "one hundred forty-two million, one hundred thirty-four thousand, six hundred thirty-one".