142631 has 8 divisors (see below), whose sum is σ = 152064. Its totient is φ = 133560.

The previous prime is 142619. The next prime is 142657. The reversal of 142631 is 136241.

142631 = T₅₉ + T₆₀ + ... + T₁₀₁.

142631 = 14² + 15² + ... + 75².

142631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 142631 - 2⁶ = 142567 is a prime.

It is a super-2 number, since 2×142631² = 40687204322, 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 (142601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1280 + ... + 1386.

It is an arithmetic number, because the mean of its divisors is an integer number (19008).

2¹⁴²⁶³¹ is an apocalyptic number.

142631 is a deficient number, since it is larger than the sum of its proper divisors (9433).

142631 is a wasteful number, since it uses less digits than its factorization.

142631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181.

The product of its digits is 144, while the sum is 17.

The square root of 142631 is about 377.6651956429. The cubic root of 142631 is about 52.2481970944.

Adding to 142631 its reverse (136241), we get a palindrome (278872).

The spelling of 142631 in words is "one hundred forty-two thousand, six hundred thirty-one".