145534140 has 36 divisors (see below), whose sum is σ = 441454104. Its totient is φ = 38809056.

The previous prime is 145534139. The next prime is 145534153. The reversal of 145534140 is 41435541.

It is a happy number.

145534140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 404082 + ... + 404441.

It is an arithmetic number, because the mean of its divisors is an integer number (12262614).

Almost surely, 2^145534140 is an apocalyptic number.

145534140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145534140 is an abundant number, since it is smaller than the sum of its proper divisors (295919964).

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

145534140 is a wasteful number, since it uses less digits than its factorization.

145534140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808538 (or 808533 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 145534140 is about 12063.7531473418. The cubic root of 145534140 is about 526.0030890343.

Adding to 145534140 its reverse (41435541), we get a palindrome (186969681).

The spelling of 145534140 in words is "one hundred forty-five million, five hundred thirty-four thousand, one hundred forty".