142131434 has 8 divisors (see below), whose sum is σ = 213257280. Its totient is φ = 71045676.

The previous prime is 142131427. The next prime is 142131439. The reversal of 142131434 is 434131241.

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

It is not an unprimeable number, because it can be changed into a prime (142131439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1487 + ... + 16925.

It is an arithmetic number, because the mean of its divisors is an integer number (26657160).

Almost surely, 2^142131434 is an apocalyptic number.

142131434 is a deficient number, since it is larger than the sum of its proper divisors (71125846).

142131434 is a wasteful number, since it uses less digits than its factorization.

142131434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20044.

The product of its digits is 1152, while the sum is 23.

The square root of 142131434 is about 11921.8888604113. Note that the first 4 decimals coincide. The cubic root of 142131434 is about 521.8712585530.

Adding to 142131434 its reverse (434131241), we get a palindrome (576262675).

The spelling of 142131434 in words is "one hundred forty-two million, one hundred thirty-one thousand, four hundred thirty-four".