428124127398 has 64 divisors (see below), whose sum is σ = 954374344704. Its totient is φ = 126939456000.

The previous prime is 428124127397. The next prime is 428124127427. The reversal of 428124127398 is 893721421824.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 428124127398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428124127391) 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, 490590 + ... + 1047342.

It is an arithmetic number, because the mean of its divisors is an integer number (14912099136).

Almost surely, 2^428124127398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428124127398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477187172352).

428124127398 is an abundant number, since it is smaller than the sum of its proper divisors (526250217306).

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

428124127398 is a wasteful number, since it uses less digits than its factorization.

428124127398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557021.

The product of its digits is 1548288, while the sum is 51.

The spelling of 428124127398 in words is "four hundred twenty-eight billion, one hundred twenty-four million, one hundred twenty-seven thousand, three hundred ninety-eight".