145024020 has 60 divisors (see below), whose sum is σ = 454950804. Its totient is φ = 38672640.

The previous prime is 145024003. The next prime is 145024043. The reversal of 145024020 is 20420541.

It can be written as a sum of positive squares in 2 ways, for example, as 28772496 + 116251524 = 5364^2 + 10782^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 145023984 and 145024002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43141 + ... + 46380.

Almost surely, 2^145024020 is an apocalyptic number.

145024020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145024020 is an abundant number, since it is smaller than the sum of its proper divisors (309926784).

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

145024020 is a wasteful number, since it uses less digits than its factorization.

145024020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89542 (or 89531 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 145024020 is about 12042.5919137036. The cubic root of 145024020 is about 525.3877951144.

Adding to 145024020 its reverse (20420541), we get a palindrome (165444561).

The spelling of 145024020 in words is "one hundred forty-five million, twenty-four thousand, twenty".