142671838 has 8 divisors (see below), whose sum is σ = 215641800. Its totient is φ = 70791240.

The previous prime is 142671833. The next prime is 142671883. The reversal of 142671838 is 838176241.

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

It is a self number, because there is not a number n which added to its sum of digits gives 142671838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142671833) 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, 272013 + ... + 272536.

It is an arithmetic number, because the mean of its divisors is an integer number (26955225).

Almost surely, 2^142671838 is an apocalyptic number.

142671838 is a deficient number, since it is larger than the sum of its proper divisors (72969962).

142671838 is a wasteful number, since it uses less digits than its factorization.

142671838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544682.

The product of its digits is 64512, while the sum is 40.

The square root of 142671838 is about 11944.5317195778. The cubic root of 142671838 is about 522.5318317336.

The spelling of 142671838 in words is "one hundred forty-two million, six hundred seventy-one thousand, eight hundred thirty-eight".