142111637 has 2 divisors, whose sum is σ = 142111638. Its totient is φ = 142111636.

The previous prime is 142111631. The next prime is 142111727. The reversal of 142111637 is 736111241.

142111637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141752836 + 358801 = 11906^2 + 599^2 .

It is an emirp because it is prime and its reverse (736111241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142111637 - 2¹² = 142107541 is a prime.

It is a Chen prime.

It is equal to p_8024615 and since 142111637 and 8024615 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142111631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71055818 + 71055819.

It is an arithmetic number, because the mean of its divisors is an integer number (71055819).

Almost surely, 2^142111637 is an apocalyptic number.

It is an amenable number.

142111637 is a deficient number, since it is larger than the sum of its proper divisors (1).

142111637 is an equidigital number, since it uses as much as digits as its factorization.

142111637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

The square root of 142111637 is about 11921.0585519911. The cubic root of 142111637 is about 521.8470275420.

Adding to 142111637 its reverse (736111241), we get a palindrome (878222878).

The spelling of 142111637 in words is "one hundred forty-two million, one hundred eleven thousand, six hundred thirty-seven".