101442243 has 16 divisors (see below), whose sum is σ = 154791680. Its totient is φ = 57887136.

The previous prime is 101442239. The next prime is 101442277. The reversal of 101442243 is 342244101.

It is not a de Polignac number, because 101442243 - 2² = 101442239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101442283) 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, 14496 + ... + 20322.

It is an arithmetic number, because the mean of its divisors is an integer number (9674480).

Almost surely, 2^101442243 is an apocalyptic number.

101442243 is a deficient number, since it is larger than the sum of its proper divisors (53349437).

101442243 is an equidigital number, since it uses as much as digits as its factorization.

101442243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6666.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 101442243 is about 10071.8540001332. The cubic root of 101442243 is about 466.3796739369.

Adding to 101442243 its reverse (342244101), we get a palindrome (443686344).

The spelling of 101442243 in words is "one hundred one million, four hundred forty-two thousand, two hundred forty-three".