142620163631 has 16 divisors (see below), whose sum is σ = 158334583680. Its totient is φ = 127367011680.

The previous prime is 142620163589. The next prime is 142620163687. The reversal of 142620163631 is 136361026241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142620163631 is a prime.

It is a super-2 number, since 2×142620163631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142620163591 and 142620163600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142620163531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849125 + ... + 1003121.

It is an arithmetic number, because the mean of its divisors is an integer number (9895911480).

Almost surely, 2^142620163631 is an apocalyptic number.

142620163631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142620163631 is a deficient number, since it is larger than the sum of its proper divisors (15714420049).

142620163631 is a wasteful number, since it uses less digits than its factorization.

142620163631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155494.

The product of its (nonzero) digits is 31104, while the sum is 35.

Adding to 142620163631 its reverse (136361026241), we get a palindrome (278981189872).

The spelling of 142620163631 in words is "one hundred forty-two billion, six hundred twenty million, one hundred sixty-three thousand, six hundred thirty-one".