442221741 has 32 divisors (see below), whose sum is σ = 706917120. Its totient is φ = 271605312.

The previous prime is 442221721. The next prime is 442221749. The reversal of 442221741 is 147122244.

442221741 is a `hidden beast` number, since 442 + 2 + 217 + 4 + 1 = 666.

It is not a de Polignac number, because 442221741 - 2⁵ = 442221709 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 (442221749) 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, 254311 + ... + 256043.

It is an arithmetic number, because the mean of its divisors is an integer number (22091160).

Almost surely, 2^442221741 is an apocalyptic number.

It is an amenable number.

442221741 is a deficient number, since it is larger than the sum of its proper divisors (264695379).

442221741 is a wasteful number, since it uses less digits than its factorization.

442221741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482 (or 2476 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 442221741 is about 21029.0689522860. The cubic root of 442221741 is about 761.8685215526.

Adding to 442221741 its reverse (147122244), we get a palindrome (589343985).

The spelling of 442221741 in words is "four hundred forty-two million, two hundred twenty-one thousand, seven hundred forty-one".