137420143 has 8 divisors (see below), whose sum is σ = 157171712. Its totient is φ = 117698616.

The previous prime is 137420123. The next prime is 137420161. The reversal of 137420143 is 341024731.

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

It is not a de Polignac number, because 137420143 - 2¹⁷ = 137289071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137420113) 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, 3346 + ... + 16912.

It is an arithmetic number, because the mean of its divisors is an integer number (19646464).

Almost surely, 2^137420143 is an apocalyptic number.

137420143 is a deficient number, since it is larger than the sum of its proper divisors (19751569).

137420143 is a wasteful number, since it uses less digits than its factorization.

137420143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15021.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 137420143 is about 11722.6337910898. The cubic root of 137420143 is about 516.0401174165.

Adding to 137420143 its reverse (341024731), we get a palindrome (478444874).

The spelling of 137420143 in words is "one hundred thirty-seven million, four hundred twenty thousand, one hundred forty-three".