137442 has 8 divisors (see below), whose sum is σ = 274896. Its totient is φ = 45812.

The previous prime is 137437. The next prime is 137443. The reversal of 137442 is 244731.

137442 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

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

137442 is an admirable number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (137443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11448 + ... + 11459.

It is an arithmetic number, because the mean of its divisors is an integer number (34362).

2¹³⁷⁴⁴² is an apocalyptic number.

137442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137442 is a wasteful number, since it uses less digits than its factorization.

137442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22912.

The product of its digits is 672, while the sum is 21.

The square root of 137442 is about 370.7317089217. The cubic root of 137442 is about 51.6067475101.

The spelling of 137442 in words is "one hundred thirty-seven thousand, four hundred forty-two".