149743 has 4 divisors (see below), whose sum is σ = 163368. Its totient is φ = 136120.

The previous prime is 149731. The next prime is 149749. The reversal of 149743 is 347941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149743 - 2⁵ = 149711 is a prime.

It is a Duffinian number.

149743 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149749) 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, 6796 + ... + 6817.

It is an arithmetic number, because the mean of its divisors is an integer number (40842).

2¹⁴⁹⁷⁴³ is an apocalyptic number.

149743 is a deficient number, since it is larger than the sum of its proper divisors (13625).

149743 is a wasteful number, since it uses less digits than its factorization.

149743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13624.

The product of its digits is 3024, while the sum is 28.

The square root of 149743 is about 386.9664068107. The cubic root of 149743 is about 53.1025663066.

It can be divided in two parts, 1497 and 43, that added together give a triangular number (1540 = T₅₅).

The spelling of 149743 in words is "one hundred forty-nine thousand, seven hundred forty-three".