149129 has 4 divisors (see below), whose sum is σ = 150084. Its totient is φ = 148176.

The previous prime is 149119. The next prime is 149143. The reversal of 149129 is 921941.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 921941 = 659 ⋅1399.

It can be written as a sum of positive squares in 2 ways, for example, as 126025 + 23104 = 355^2 + 152^2 .

It is a cyclic number.

It is not a de Polignac number, because 149129 - 2⁴ = 149113 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a nialpdrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 149098 and 149107.

It is not an unprimeable number, because it can be changed into a prime (149119) 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, 182 + ... + 575.

It is an arithmetic number, because the mean of its divisors is an integer number (37521).

2¹⁴⁹¹²⁹ is an apocalyptic number.

It is an amenable number.

149129 is a deficient number, since it is larger than the sum of its proper divisors (955).

149129 is an equidigital number, since it uses as much as digits as its factorization.

149129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954.

The product of its digits is 648, while the sum is 26.

The square root of 149129 is about 386.1722413639. The cubic root of 149129 is about 53.0298870237.

The spelling of 149129 in words is "one hundred forty-nine thousand, one hundred twenty-nine".