145400 has 24 divisors (see below), whose sum is σ = 338520. Its totient is φ = 58080.

The previous prime is 145399. The next prime is 145417. The reversal of 145400 is 4541.

It is a super-2 number, since 2×145400² = 42282320000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164 + ... + 563.

It is an arithmetic number, because the mean of its divisors is an integer number (14105).

2¹⁴⁵⁴⁰⁰ is an apocalyptic number.

145400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145400 is an abundant number, since it is smaller than the sum of its proper divisors (193120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145400 is a wasteful number, since it uses less digits than its factorization.

145400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 145400 is about 381.3135192988. The cubic root of 145400 is about 52.5841432249.

Adding to 145400 its reverse (4541), we get a palindrome (149941).

It can be divided in two parts, 145 and 400, that added together give a palindrome (545).

The spelling of 145400 in words is "one hundred forty-five thousand, four hundred".