142141631 has 2 divisors, whose sum is σ = 142141632. Its totient is φ = 142141630.

The previous prime is 142141621. The next prime is 142141663. The reversal of 142141631 is 136141241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142141631 is a prime.

It is a super-2 number, since 2×142141631² = 40408486526680322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142141597 and 142141606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142141621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71070815 + 71070816.

It is an arithmetic number, because the mean of its divisors is an integer number (71070816).

Almost surely, 2^142141631 is an apocalyptic number.

142141631 is a deficient number, since it is larger than the sum of its proper divisors (1).

142141631 is an equidigital number, since it uses as much as digits as its factorization.

142141631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 142141631 is about 11922.3165114838. The cubic root of 142141631 is about 521.8837385368.

Adding to 142141631 its reverse (136141241), we get a palindrome (278282872).

The spelling of 142141631 in words is "one hundred forty-two million, one hundred forty-one thousand, six hundred thirty-one".