101243472 has 40 divisors (see below), whose sum is σ = 285324000. Its totient is φ = 30679680.

The previous prime is 101243453. The next prime is 101243479. The reversal of 101243472 is 274342101.

It is a happy number.

It is a super-2 number, since 2×101243472² = 20500481245229568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101243479) 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, 95347 + ... + 96402.

It is an arithmetic number, because the mean of its divisors is an integer number (7133100).

Almost surely, 2^101243472 is an apocalyptic number.

101243472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101243472 is an abundant number, since it is smaller than the sum of its proper divisors (184080528).

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

101243472 is a wasteful number, since it uses less digits than its factorization.

101243472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191771 (or 191765 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 101243472 is about 10061.9815145924. The cubic root of 101243472 is about 466.0748588809.

Adding to 101243472 its reverse (274342101), we get a palindrome (375585573).

The spelling of 101243472 in words is "one hundred one million, two hundred forty-three thousand, four hundred seventy-two".