445241421 has 32 divisors (see below), whose sum is σ = 696240000. Its totient is φ = 280433664.

The previous prime is 445241417. The next prime is 445241443. The reversal of 445241421 is 124142544.

It is not a de Polignac number, because 445241421 - 2² = 445241417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445241411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229371 + ... + 231303.

It is an arithmetic number, because the mean of its divisors is an integer number (21757500).

Almost surely, 2^445241421 is an apocalyptic number.

It is an amenable number.

445241421 is a deficient number, since it is larger than the sum of its proper divisors (250998579).

445241421 is a wasteful number, since it uses less digits than its factorization.

445241421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410 (or 2404 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 445241421 is about 21100.7445603230. The cubic root of 445241421 is about 763.5987111885.

Adding to 445241421 its reverse (124142544), we get a palindrome (569383965).

The spelling of 445241421 in words is "four hundred forty-five million, two hundred forty-one thousand, four hundred twenty-one".