101243040 has 48 divisors (see below), whose sum is σ = 318917088. Its totient is φ = 26998016.

The previous prime is 101242979. The next prime is 101243047. The reversal of 101243040 is 40342101.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (101243047) 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, 104982 + ... + 105941.

It is an arithmetic number, because the mean of its divisors is an integer number (6644106).

Almost surely, 2^101243040 is an apocalyptic number.

101243040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101243040 is an abundant number, since it is smaller than the sum of its proper divisors (217674048).

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

101243040 is a wasteful number, since it uses less digits than its factorization.

101243040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210941 (or 210933 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 101243040 is about 10061.9600476249. The cubic root of 101243040 is about 466.0741959752.

Adding to 101243040 its reverse (40342101), we get a palindrome (141585141).

The spelling of 101243040 in words is "one hundred one million, two hundred forty-three thousand, forty".