101021442 has 32 divisors (see below), whose sum is σ = 220017600. Its totient is φ = 30800448.

The previous prime is 101021399. The next prime is 101021443. The reversal of 101021442 is 244120101.

It is not an unprimeable number, because it can be changed into a prime (101021443) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 11973 + ... + 18584.

It is an arithmetic number, because the mean of its divisors is an integer number (6875550).

Almost surely, 2^101021442 is an apocalyptic number.

101021442 is an abundant number, since it is smaller than the sum of its proper divisors (118996158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101021442 is a wasteful number, since it uses less digits than its factorization.

101021442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30610.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 101021442 is about 10050.9423438800. The cubic root of 101021442 is about 465.7339040914.

Adding to 101021442 its reverse (244120101), we get a palindrome (345141543).

The spelling of 101021442 in words is "one hundred one million, twenty-one thousand, four hundred forty-two".