128192461 has 16 divisors (see below), whose sum is σ = 138153600. Its totient is φ = 118522368.

The previous prime is 128192459. The next prime is 128192473. The reversal of 128192461 is 164291821.

It is a happy number.

It is not a de Polignac number, because 128192461 - 2¹ = 128192459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128192261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313225 + ... + 313633.

It is an arithmetic number, because the mean of its divisors is an integer number (8634600).

Almost surely, 2^128192461 is an apocalyptic number.

It is an amenable number.

128192461 is a deficient number, since it is larger than the sum of its proper divisors (9961139).

128192461 is a wasteful number, since it uses less digits than its factorization.

128192461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708.

The product of its digits is 6912, while the sum is 34.

The square root of 128192461 is about 11322.2109589956. The cubic root of 128192461 is about 504.2208827003.

The spelling of 128192461 in words is "one hundred twenty-eight million, one hundred ninety-two thousand, four hundred sixty-one".