128331045 has 48 divisors (see below), whose sum is σ = 236882880. Its totient is φ = 64046592.

The previous prime is 128331043. The next prime is 128331067. The reversal of 128331045 is 540133821.

It is a happy number.

It is not a de Polignac number, because 128331045 - 2¹ = 128331043 is a prime.

It is a super-2 number, since 2×128331045² = 32937714221584050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128331043) 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, 173286 + ... + 174024.

It is an arithmetic number, because the mean of its divisors is an integer number (4935060).

Almost surely, 2^128331045 is an apocalyptic number.

128331045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128331045 is a deficient number, since it is larger than the sum of its proper divisors (108551835).

128331045 is a wasteful number, since it uses less digits than its factorization.

128331045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 128331045 is about 11328.3293119506. The cubic root of 128331045 is about 504.4025152782.

Adding to 128331045 its reverse (540133821), we get a palindrome (668464866).

The spelling of 128331045 in words is "one hundred twenty-eight million, three hundred thirty-one thousand, forty-five".