145346 has 4 divisors (see below), whose sum is σ = 218022. Its totient is φ = 72672.

The previous prime is 145307. The next prime is 145349. The reversal of 145346 is 643541.

It is a happy number.

145346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 643541 = 37 ⋅17393.

It can be written as a sum of positive squares in only one way, i.e., 126025 + 19321 = 355^2 + 139^2 .

It is a super-2 number, since 2×145346² = 42250919432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145349) by changing a digit.

145346 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36335 + ... + 36338.

2¹⁴⁵³⁴⁶ is an apocalyptic number.

145346 is a deficient number, since it is larger than the sum of its proper divisors (72676).

145346 is an equidigital number, since it uses as much as digits as its factorization.

145346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72675.

The product of its digits is 1440, while the sum is 23.

The square root of 145346 is about 381.2427048482. The cubic root of 145346 is about 52.5776326900.

Adding to 145346 its reverse (643541), we get a palindrome (788887).

The spelling of 145346 in words is "one hundred forty-five thousand, three hundred forty-six".