442200440123 has 32 divisors (see below), whose sum is σ = 498170115072. Its totient is φ = 389927260800.

The previous prime is 442200440111. The next prime is 442200440147. The reversal of 442200440123 is 321044002244.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 442200440123 - 2⁴ = 442200440107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442200440092 and 442200440101.

It is not an unprimeable number, because it can be changed into a prime (442200440153) 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, 3713690 + ... + 3830912.

It is an arithmetic number, because the mean of its divisors is an integer number (15567816096).

Almost surely, 2^442200440123 is an apocalyptic number.

442200440123 is a deficient number, since it is larger than the sum of its proper divisors (55969674949).

442200440123 is a wasteful number, since it uses less digits than its factorization.

442200440123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117435.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 442200440123 its reverse (321044002244), we get a palindrome (763244442367).

The spelling of 442200440123 in words is "four hundred forty-two billion, two hundred million, four hundred forty thousand, one hundred twenty-three".