103020120 has 128 divisors (see below), whose sum is σ = 392486400. Its totient is φ = 23545728.

The previous prime is 103020107. The next prime is 103020149. The reversal of 103020120 is 21020301.

It is a happy number.

It is a super-2 number, since 2×103020120² = 21226290249628800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 747 + ... + 14373.

It is an arithmetic number, because the mean of its divisors is an integer number (3066300).

Almost surely, 2^103020120 is an apocalyptic number.

103020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196243200).

103020120 is an abundant number, since it is smaller than the sum of its proper divisors (289466280).

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

103020120 is a wasteful number, since it uses less digits than its factorization.

103020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13654 (or 13644 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 103020120 is about 10149.8827579436. The cubic root of 103020120 is about 468.7853349363.

Adding to 103020120 its reverse (21020301), we get a palindrome (124040421).

The spelling of 103020120 in words is "one hundred three million, twenty thousand, one hundred twenty".