101421500 has 48 divisors (see below), whose sum is σ = 222864096. Its totient is φ = 40320000.

The previous prime is 101421493. The next prime is 101421503. The reversal of 101421500 is 5124101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101421503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95975 + ... + 97025.

It is an arithmetic number, because the mean of its divisors is an integer number (4643002).

Almost surely, 2^101421500 is an apocalyptic number.

101421500 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 101421500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111432048).

101421500 is an abundant number, since it is smaller than the sum of its proper divisors (121442596).

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

101421500 is a wasteful number, since it uses less digits than its factorization.

101421500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 101421500 is about 10070.8241966584. The cubic root of 101421500 is about 466.3478831933.

Adding to 101421500 its reverse (5124101), we get a palindrome (106545601).

The spelling of 101421500 in words is "one hundred one million, four hundred twenty-one thousand, five hundred".