101442133 has 4 divisors (see below), whose sum is σ = 109245388. Its totient is φ = 93638880.

The previous prime is 101442119. The next prime is 101442149. The reversal of 101442133 is 331244101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331244101 = 9601 ⋅34501.

It can be written as a sum of positive squares in 2 ways, for example, as 5049009 + 96393124 = 2247^2 + 9818^2 .

It is a cyclic number.

It is not a de Polignac number, because 101442133 - 2⁹ = 101441621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101442133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101442113) 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 3 ways as a sum of consecutive naturals, for example, 3901608 + ... + 3901633.

It is an arithmetic number, because the mean of its divisors is an integer number (27311347).

Almost surely, 2^101442133 is an apocalyptic number.

101442133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

101442133 is a deficient number, since it is larger than the sum of its proper divisors (7803255).

101442133 is an equidigital number, since it uses as much as digits as its factorization.

101442133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7803254.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 101442133 is about 10071.8485393695. The cubic root of 101442133 is about 466.3795053623.

Adding to 101442133 its reverse (331244101), we get a palindrome (432686234).

The spelling of 101442133 in words is "one hundred one million, four hundred forty-two thousand, one hundred thirty-three".