101243502 has 24 divisors (see below), whose sum is σ = 219586536. Its totient is φ = 33713136.

The previous prime is 101243501. The next prime is 101243521. The reversal of 101243502 is 205342101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101243501) 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 11 ways as a sum of consecutive naturals, for example, 19993 + ... + 24539.

It is an arithmetic number, because the mean of its divisors is an integer number (9149439).

Almost surely, 2^101243502 is an apocalyptic number.

101243502 is an abundant number, since it is smaller than the sum of its proper divisors (118343034).

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

101243502 is a wasteful number, since it uses less digits than its factorization.

101243502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5792 (or 5789 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 101243502 is about 10061.9830053524. The cubic root of 101243502 is about 466.0749049159.

Adding to 101243502 its reverse (205342101), we get a palindrome (306585603).

The spelling of 101243502 in words is "one hundred one million, two hundred forty-three thousand, five hundred two".