128103492 has 24 divisors (see below), whose sum is σ = 326081952. Its totient is φ = 38819200.

The previous prime is 128103487. The next prime is 128103497. The reversal of 128103492 is 294301821.

It is an interprime number because it is at equal distance from previous prime (128103487) and next prime (128103497).

It is not an unprimeable number, because it can be changed into a prime (128103497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485109 + ... + 485372.

It is an arithmetic number, because the mean of its divisors is an integer number (13586748).

Almost surely, 2^128103492 is an apocalyptic number.

128103492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128103492 is an abundant number, since it is smaller than the sum of its proper divisors (197978460).

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

128103492 is a wasteful number, since it uses less digits than its factorization.

128103492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970499 (or 970497 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 128103492 is about 11318.2813182921. The cubic root of 128103492 is about 504.1042081071.

The spelling of 128103492 in words is "one hundred twenty-eight million, one hundred three thousand, four hundred ninety-two".