442496145 has 64 divisors (see below), whose sum is σ = 922682880. Its totient is φ = 175730688.

The previous prime is 442496141. The next prime is 442496221. The reversal of 442496145 is 541694244.

It is not a de Polignac number, because 442496145 - 2² = 442496141 is a prime.

It is a super-2 number, since 2×442496145² = 391605676679722050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (442496141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13671 + ... + 32739.

It is an arithmetic number, because the mean of its divisors is an integer number (14416920).

Almost surely, 2^442496145 is an apocalyptic number.

It is an amenable number.

442496145 is an abundant number, since it is smaller than the sum of its proper divisors (480186735).

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

442496145 is a wasteful number, since it uses less digits than its factorization.

442496145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19114.

The product of its digits is 138240, while the sum is 39.

The square root of 442496145 is about 21035.5923377498. The cubic root of 442496145 is about 762.0260718823.

The spelling of 442496145 in words is "four hundred forty-two million, four hundred ninety-six thousand, one hundred forty-five".