442401455 has 16 divisors (see below), whose sum is σ = 562637664. Its totient is φ = 332789760.

The previous prime is 442401437. The next prime is 442401457. The reversal of 442401455 is 554104244.

It is not a de Polignac number, because 442401455 - 2⁸ = 442401199 is a prime.

It is a super-2 number, since 2×442401455² = 391438094772234050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442401457) 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, 131879 + ... + 135191.

It is an arithmetic number, because the mean of its divisors is an integer number (35164854).

Almost surely, 2^442401455 is an apocalyptic number.

442401455 is a deficient number, since it is larger than the sum of its proper divisors (120236209).

442401455 is a wasteful number, since it uses less digits than its factorization.

442401455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4906.

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 442401455 is about 21033.3415081865. The cubic root of 442401455 is about 761.9717125415.

Adding to 442401455 its reverse (554104244), we get a palindrome (996505699).

The spelling of 442401455 in words is "four hundred forty-two million, four hundred one thousand, four hundred fifty-five".