155429 has 4 divisors (see below), whose sum is σ = 158784. Its totient is φ = 152076.

The previous prime is 155423. The next prime is 155443. The reversal of 155429 is 924551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155429 - 2⁴ = 155413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155398 and 155407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155423) 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, 1607 + ... + 1700.

It is an arithmetic number, because the mean of its divisors is an integer number (39696).

2¹⁵⁵⁴²⁹ is an apocalyptic number.

It is an amenable number.

155429 is a deficient number, since it is larger than the sum of its proper divisors (3355).

155429 is an equidigital number, since it uses as much as digits as its factorization.

155429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354.

The product of its digits is 1800, while the sum is 26.

The square root of 155429 is about 394.2448477786. The cubic root of 155429 is about 53.7663660277.

Subtracting from 155429 its sum of digits (26), we obtain a triangular number (155403 = T₅₅₇).

It can be divided in two parts, 15542 and 9, that added together give a palindrome (15551).

The spelling of 155429 in words is "one hundred fifty-five thousand, four hundred twenty-nine".