142204113631 has 4 divisors (see below), whose sum is σ = 142998550200. Its totient is φ = 141409677064.

The previous prime is 142204113617. The next prime is 142204113707. The reversal of 142204113631 is 136311402241.

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

It is a cyclic number.

It is not a de Polignac number, because 142204113631 - 2¹¹ = 142204111583 is a prime.

It is a super-2 number, since 2×142204113631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142204113631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142204113031) 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 3 ways as a sum of consecutive naturals, for example, 397218016 + ... + 397218373.

It is an arithmetic number, because the mean of its divisors is an integer number (35749637550).

Almost surely, 2^142204113631 is an apocalyptic number.

142204113631 is a deficient number, since it is larger than the sum of its proper divisors (794436569).

142204113631 is an equidigital number, since it uses as much as digits as its factorization.

142204113631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794436568.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 142204113631 its reverse (136311402241), we get a palindrome (278515515872).

The spelling of 142204113631 in words is "one hundred forty-two billion, two hundred four million, one hundred thirteen thousand, six hundred thirty-one".