428339142 has 96 divisors (see below), whose sum is σ = 1163635200. Its totient is φ = 110626560.

The previous prime is 428339137. The next prime is 428339147. The reversal of 428339142 is 241933824.

It is an interprime number because it is at equal distance from previous prime (428339137) and next prime (428339147).

It is a junction number, because it is equal to n+sod(n) for n = 428339097 and 428339106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428339147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 275038 + ... + 276590.

It is an arithmetic number, because the mean of its divisors is an integer number (12121200).

Almost surely, 2^428339142 is an apocalyptic number.

428339142 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 428339142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581817600).

428339142 is an abundant number, since it is smaller than the sum of its proper divisors (735296058).

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

428339142 is a wasteful number, since it uses less digits than its factorization.

428339142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778 (or 1775 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 428339142 is about 20696.3557661729. The cubic root of 428339142 is about 753.8112028387.

The spelling of 428339142 in words is "four hundred twenty-eight million, three hundred thirty-nine thousand, one hundred forty-two".