445421142 has 48 divisors (see below), whose sum is σ = 1018368000. Its totient is φ = 140314032.

The previous prime is 445421101. The next prime is 445421143. The reversal of 445421142 is 241124544.

445421142 is a `hidden beast` number, since 4 + 4 + 542 + 114 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445421143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162459 + ... + 165177.

It is an arithmetic number, because the mean of its divisors is an integer number (21216000).

Almost surely, 2^445421142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445421142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (509184000).

445421142 is an abundant number, since it is smaller than the sum of its proper divisors (572946858).

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

445421142 is a wasteful number, since it uses less digits than its factorization.

445421142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225 (or 3222 counting only the distinct ones).

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

The square root of 445421142 is about 21105.0027718548. The cubic root of 445421142 is about 763.7014391744.

Adding to 445421142 its reverse (241124544), we get a palindrome (686545686).

The spelling of 445421142 in words is "four hundred forty-five million, four hundred twenty-one thousand, one hundred forty-two".