103145020 has 24 divisors (see below), whose sum is σ = 236296368. Its totient is φ = 37507200.

The previous prime is 103144981. The next prime is 103145027. The reversal of 103145020 is 20541301.

It is a junction number, because it is equal to n+sod(n) for n = 103144985 and 103145003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103145027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234201 + ... + 234640.

It is an arithmetic number, because the mean of its divisors is an integer number (9845682).

Almost surely, 2^103145020 is an apocalyptic number.

103145020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103145020 is an abundant number, since it is smaller than the sum of its proper divisors (133151348).

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

103145020 is a wasteful number, since it uses less digits than its factorization.

103145020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468861 (or 468859 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 103145020 is about 10156.0336746192. The cubic root of 103145020 is about 468.9747077891.

Adding to 103145020 its reverse (20541301), we get a palindrome (123686321).

The spelling of 103145020 in words is "one hundred three million, one hundred forty-five thousand, twenty".