128942352 has 240 divisors, whose sum is σ = 466577280. Its totient is φ = 32256000.

The previous prime is 128942339. The next prime is 128942353. The reversal of 128942352 is 253249821.

It is a happy number.

It is a super-2 number, since 2×128942352² = 33252260278583808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128942353) 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, 321352 + ... + 321752.

It is an arithmetic number, because the mean of its divisors is an integer number (1944072).

Almost surely, 2^128942352 is an apocalyptic number.

128942352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128942352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233288640).

128942352 is an abundant number, since it is smaller than the sum of its proper divisors (337634928).

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

128942352 is a wasteful number, since it uses less digits than its factorization.

128942352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 453 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 128942352 is about 11355.2785963181. The cubic root of 128942352 is about 505.2021567529.

The spelling of 128942352 in words is "one hundred twenty-eight million, nine hundred forty-two thousand, three hundred fifty-two".