442253121 has 4 divisors (see below), whose sum is σ = 589670832. Its totient is φ = 294835412.

The previous prime is 442253089. The next prime is 442253153. The reversal of 442253121 is 121352244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (442253089) and next prime (442253153).

It is a cyclic number.

It is not a de Polignac number, because 442253121 - 2⁵ = 442253089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442253091 and 442253100.

It is not an unprimeable number, because it can be changed into a prime (442253171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73708851 + ... + 73708856.

It is an arithmetic number, because the mean of its divisors is an integer number (147417708).

Almost surely, 2^442253121 is an apocalyptic number.

It is an amenable number.

442253121 is a deficient number, since it is larger than the sum of its proper divisors (147417711).

442253121 is a wasteful number, since it uses less digits than its factorization.

442253121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147417710.

The product of its digits is 1920, while the sum is 24.

The square root of 442253121 is about 21029.8150491154. The cubic root of 442253121 is about 761.8865418250.

The spelling of 442253121 in words is "four hundred forty-two million, two hundred fifty-three thousand, one hundred twenty-one".