101640241 has 4 divisors (see below), whose sum is σ = 101745252. Its totient is φ = 101535232.

The previous prime is 101640193. The next prime is 101640251. The reversal of 101640241 is 142046101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72318016 + 29322225 = 8504^2 + 5415^2 .

It is a cyclic number.

It is not a de Polignac number, because 101640241 - 2²³ = 93251633 is a prime.

It is a super-4 number, since 4×101640241⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101640251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51040 + ... + 52993.

It is an arithmetic number, because the mean of its divisors is an integer number (25436313).

Almost surely, 2^101640241 is an apocalyptic number.

It is an amenable number.

101640241 is a deficient number, since it is larger than the sum of its proper divisors (105011).

101640241 is an equidigital number, since it uses as much as digits as its factorization.

101640241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105010.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 101640241 is about 10081.6784812848. The cubic root of 101640241 is about 466.6829079948.

Adding to 101640241 its reverse (142046101), we get a palindrome (243686342).

The spelling of 101640241 in words is "one hundred one million, six hundred forty thousand, two hundred forty-one".