101224042 has 4 divisors (see below), whose sum is σ = 151836066. Its totient is φ = 50612020.

The previous prime is 101224037. The next prime is 101224073. The reversal of 101224042 is 240422101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240422101 = 9547 ⋅25183.

It can be written as a sum of positive squares in only one way, i.e., 51394561 + 49829481 = 7169^2 + 7059^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25306009 + ... + 25306012.

Almost surely, 2^101224042 is an apocalyptic number.

101224042 is a deficient number, since it is larger than the sum of its proper divisors (50612024).

101224042 is an equidigital number, since it uses as much as digits as its factorization.

101224042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50612023.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 101224042 is about 10061.0159526760. The cubic root of 101224042 is about 466.0450416041.

Adding to 101224042 its reverse (240422101), we get a palindrome (341646143).

The spelling of 101224042 in words is "one hundred one million, two hundred twenty-four thousand, forty-two".