128367741 has 4 divisors (see below), whose sum is σ = 171156992. Its totient is φ = 85578492.

The previous prime is 128367739. The next prime is 128367791. The reversal of 128367741 is 147763821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 128367741 - 2¹ = 128367739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128367741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128367721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21394621 + ... + 21394626.

It is an arithmetic number, because the mean of its divisors is an integer number (42789248).

Almost surely, 2^128367741 is an apocalyptic number.

It is an amenable number.

128367741 is a deficient number, since it is larger than the sum of its proper divisors (42789251).

128367741 is an equidigital number, since it uses as much as digits as its factorization.

128367741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42789250.

The product of its digits is 56448, while the sum is 39.

The square root of 128367741 is about 11329.9488524883. The cubic root of 128367741 is about 504.4505883191.

The spelling of 128367741 in words is "one hundred twenty-eight million, three hundred sixty-seven thousand, seven hundred forty-one".