101230420 has 24 divisors (see below), whose sum is σ = 213671304. Its totient is φ = 40285056.

The previous prime is 101230417. The next prime is 101230421. The reversal of 101230420 is 24032101.

It can be written as a sum of positive squares in 4 ways, for example, as 58798224 + 42432196 = 7668^2 + 6514^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 101230420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101230421) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8907 + ... + 16786.

It is an arithmetic number, because the mean of its divisors is an integer number (8902971).

Almost surely, 2^101230420 is an apocalyptic number.

101230420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101230420 is an abundant number, since it is smaller than the sum of its proper divisors (112440884).

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

101230420 is a wasteful number, since it uses less digits than its factorization.

101230420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25899 (or 25897 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 101230420 is about 10061.3329136849. The cubic root of 101230420 is about 466.0548297031.

Adding to 101230420 its reverse (24032101), we get a palindrome (125262521).

The spelling of 101230420 in words is "one hundred one million, two hundred thirty thousand, four hundred twenty".