442024155 has 16 divisors (see below), whose sum is σ = 785820960. Its totient is φ = 235746144.

The previous prime is 442024091. The next prime is 442024159. The reversal of 442024155 is 551420244.

442024155 is a `hidden beast` number, since 44 + 202 + 415 + 5 = 666.

It is not a de Polignac number, because 442024155 - 2⁶ = 442024091 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (442024159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1636992 + ... + 1637261.

It is an arithmetic number, because the mean of its divisors is an integer number (49113810).

Almost surely, 2^442024155 is an apocalyptic number.

442024155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

442024155 is a deficient number, since it is larger than the sum of its proper divisors (343796805).

442024155 is a wasteful number, since it uses less digits than its factorization.

442024155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274267 (or 3274261 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 442024155 is about 21024.3705018723. The cubic root of 442024155 is about 761.7550362690.

Adding to 442024155 its reverse (551420244), we get a palindrome (993444399).

The spelling of 442024155 in words is "four hundred forty-two million, twenty-four thousand, one hundred fifty-five".