442021101 has 16 divisors (see below), whose sum is σ = 596643840. Its totient is φ = 291054960.

The previous prime is 442021093. The next prime is 442021109. The reversal of 442021101 is 101120244.

It is an interprime number because it is at equal distance from previous prime (442021093) and next prime (442021109).

It is not a de Polignac number, because 442021101 - 2³ = 442021093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442021109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131520 + ... + 134838.

It is an arithmetic number, because the mean of its divisors is an integer number (37290240).

Almost surely, 2^442021101 is an apocalyptic number.

It is an amenable number.

442021101 is a deficient number, since it is larger than the sum of its proper divisors (154622739).

442021101 is a wasteful number, since it uses less digits than its factorization.

442021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856.

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

The square root of 442021101 is about 21024.2978717483. The cubic root of 442021101 is about 761.7532819115.

Adding to 442021101 its reverse (101120244), we get a palindrome (543141345).

The spelling of 442021101 in words is "four hundred forty-two million, twenty-one thousand, one hundred one".