82142631 has 6 divisors (see below), whose sum is σ = 118650480. Its totient is φ = 54761748.

The previous prime is 82142629. The next prime is 82142651. The reversal of 82142631 is 13624128.

82142631 is a `hidden beast` number, since 8 + 21 + 4 + 2 + 631 = 666.

It is not a de Polignac number, because 82142631 - 2¹ = 82142629 is a prime.

It is a super-2 number, since 2×82142631² = 13494823655204322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82142595 and 82142604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82142651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4563471 + ... + 4563488.

It is an arithmetic number, because the mean of its divisors is an integer number (19775080).

Almost surely, 2^82142631 is an apocalyptic number.

82142631 is a deficient number, since it is larger than the sum of its proper divisors (36507849).

82142631 is a wasteful number, since it uses less digits than its factorization.

82142631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9126965 (or 9126962 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 82142631 is about 9063.2571959533. The cubic root of 82142631 is about 434.6998960596.

Adding to 82142631 its reverse (13624128), we get a palindrome (95766759).

The spelling of 82142631 in words is "eighty-two million, one hundred forty-two thousand, six hundred thirty-one".