101040240442 has 4 divisors (see below), whose sum is σ = 151560360666. Its totient is φ = 50520120220.

The previous prime is 101040240437. The next prime is 101040240449. The reversal of 101040240442 is 244042040101.

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

It can be written as a sum of positive squares in only one way, i.e., 88226226841 + 12814013601 = 297029^2 + 113199^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (101040240449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25260060109 + ... + 25260060112.

Almost surely, 2^101040240442 is an apocalyptic number.

101040240442 is a deficient number, since it is larger than the sum of its proper divisors (50520120224).

101040240442 is an equidigital number, since it uses as much as digits as its factorization.

101040240442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50520120223.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 101040240442 its reverse (244042040101), we get a palindrome (345082280543).

The spelling of 101040240442 in words is "one hundred one billion, forty million, two hundred forty thousand, four hundred forty-two".