142668631 has 8 divisors (see below), whose sum is σ = 163275264. Its totient is φ = 122118360.

The previous prime is 142668629. The next prime is 142668653. The reversal of 142668631 is 136866241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142668631 - 2¹ = 142668629 is a prime.

It is a super-2 number, since 2×142668631² = 40708676542828322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142668611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8515 + ... + 18916.

It is an arithmetic number, because the mean of its divisors is an integer number (20409408).

Almost surely, 2^142668631 is an apocalyptic number.

142668631 is a deficient number, since it is larger than the sum of its proper divisors (20606633).

142668631 is an equidigital number, since it uses as much as digits as its factorization.

142668631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28181.

The product of its digits is 41472, while the sum is 37.

The square root of 142668631 is about 11944.3974732927. The cubic root of 142668631 is about 522.5279165201.

The spelling of 142668631 in words is "one hundred forty-two million, six hundred sixty-eight thousand, six hundred thirty-one".