442404155454 has 32 divisors (see below), whose sum is σ = 894110894880. Its totient is φ = 145918236672.

The previous prime is 442404155443. The next prime is 442404155471. The reversal of 442404155454 is 454551404244.

It is a happy number.

It is a super-2 number, since 2×442404155454² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2901432 + ... + 3050100.

It is an arithmetic number, because the mean of its divisors is an integer number (27940965465).

Almost surely, 2^442404155454 is an apocalyptic number.

442404155454 is an abundant number, since it is smaller than the sum of its proper divisors (451706739426).

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

442404155454 is a wasteful number, since it uses less digits than its factorization.

442404155454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153884.

The product of its (nonzero) digits is 1024000, while the sum is 42.

Adding to 442404155454 its reverse (454551404244), we get a palindrome (896955559698).

The spelling of 442404155454 in words is "four hundred forty-two billion, four hundred four million, one hundred fifty-five thousand, four hundred fifty-four".