137443 has 2 divisors, whose sum is σ = 137444. Its totient is φ = 137442.

The previous prime is 137437. The next prime is 137447. The reversal of 137443 is 344731.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137443 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (137447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68721 + 68722.

It is an arithmetic number, because the mean of its divisors is an integer number (68722).

2¹³⁷⁴⁴³ is an apocalyptic number.

137443 is a deficient number, since it is larger than the sum of its proper divisors (1).

137443 is an equidigital number, since it uses as much as digits as its factorization.

137443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 22.

The square root of 137443 is about 370.7330576034. The cubic root of 137443 is about 51.6068726699.

The spelling of 137443 in words is "one hundred thirty-seven thousand, four hundred forty-three".