145342 has 4 divisors (see below), whose sum is σ = 218016. Its totient is φ = 72670.

The previous prime is 145307. The next prime is 145349. The reversal of 145342 is 243541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243541 = 239 ⋅1019.

It is a super-2 number, since 2×145342² = 42248593928, which contains 22 as substring.

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 (145349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36334 + ... + 36337.

It is an arithmetic number, because the mean of its divisors is an integer number (54504).

2¹⁴⁵³⁴² is an apocalyptic number.

145342 is a deficient number, since it is larger than the sum of its proper divisors (72674).

145342 is an equidigital number, since it uses as much as digits as its factorization.

145342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72673.

The product of its digits is 480, while the sum is 19.

The square root of 145342 is about 381.2374588101. The cubic root of 145342 is about 52.5771503640.

Adding to 145342 its reverse (243541), we get a palindrome (388883).

It can be divided in two parts, 14 and 5342, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 145342 in words is "one hundred forty-five thousand, three hundred forty-two".