442340263428 has 192 divisors, whose sum is σ = 1241359257600. Its totient is φ = 119922485760.

The previous prime is 442340263427. The next prime is 442340263429. The reversal of 442340263428 is 824362043244.

It is an interprime number because it is at equal distance from previous prime (442340263427) and next prime (442340263429).

It is a super-2 number, since 2×442340263428² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 442340263428.

It is not an unprimeable number, because it can be changed into a prime (442340263427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75237793 + ... + 75243671.

It is an arithmetic number, because the mean of its divisors is an integer number (6465412800).

Almost surely, 2^442340263428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442340263428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620679628800).

442340263428 is an abundant number, since it is smaller than the sum of its proper divisors (799018994172).

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

442340263428 is a wasteful number, since it uses less digits than its factorization.

442340263428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6450 (or 6448 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 42.

The spelling of 442340263428 in words is "four hundred forty-two billion, three hundred forty million, two hundred sixty-three thousand, four hundred twenty-eight".