142171437 has 8 divisors (see below), whose sum is σ = 189652320. Its totient is φ = 94735760.

The previous prime is 142171429. The next prime is 142171439. The reversal of 142171437 is 734171241.

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 142171437 - 2³ = 142171429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142171439) 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, 3114 + ... + 17147.

It is an arithmetic number, because the mean of its divisors is an integer number (23706540).

Almost surely, 2^142171437 is an apocalyptic number.

It is an amenable number.

142171437 is a deficient number, since it is larger than the sum of its proper divisors (47480883).

142171437 is a wasteful number, since it uses less digits than its factorization.

142171437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22603.

The product of its digits is 4704, while the sum is 30.

The square root of 142171437 is about 11923.5664547148. The cubic root of 142171437 is about 521.9202143144.

The spelling of 142171437 in words is "one hundred forty-two million, one hundred seventy-one thousand, four hundred thirty-seven".