398028458142 has 432 divisors, whose sum is σ = 1133002990080. Its totient is φ = 104162436000.

The previous prime is 398028458141. The next prime is 398028458159. The reversal of 398028458142 is 241854820893.

398028458142 is a `hidden beast` number, since 39 + 8 + 0 + 28 + 4 + 581 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398028458141) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 378713517 + ... + 378714567.

Almost surely, 2^398028458142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398028458142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566501495040).

398028458142 is an abundant number, since it is smaller than the sum of its proper divisors (734974531938).

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

398028458142 is a wasteful number, since it uses less digits than its factorization.

398028458142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 398028458142 in words is "three hundred ninety-eight billion, twenty-eight million, four hundred fifty-eight thousand, one hundred forty-two".