142931113 has 8 divisors (see below), whose sum is σ = 156450056. Its totient is φ = 129772800.

The previous prime is 142931083. The next prime is 142931123. The reversal of 142931113 is 311139241.

It can be written as a sum of positive squares in 4 ways, for example, as 24730729 + 118200384 = 4973^2 + 10872^2 .

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 142931113 - 2¹⁷ = 142800041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142931123) 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, 89328 + ... + 90913.

It is an arithmetic number, because the mean of its divisors is an integer number (19556257).

Almost surely, 2^142931113 is an apocalyptic number.

142931113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

142931113 is a deficient number, since it is larger than the sum of its proper divisors (13518943).

142931113 is a wasteful number, since it uses less digits than its factorization.

142931113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180315.

The product of its digits is 648, while the sum is 25.

The square root of 142931113 is about 11955.3800859697. The cubic root of 142931113 is about 522.8481694617.

The spelling of 142931113 in words is "one hundred forty-two million, nine hundred thirty-one thousand, one hundred thirteen".