42528120277 has 4 divisors (see below), whose sum is σ = 42528730636. Its totient is φ = 42527509920.

The previous prime is 42528120259. The next prime is 42528120287. The reversal of 42528120277 is 77202182524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13435359921 + 29092760356 = 115911^2 + 170566^2 .

It is a cyclic number.

It is not a de Polignac number, because 42528120277 - 2⁷ = 42528120149 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 (42528120247) 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, 184848 + ... + 345289.

It is an arithmetic number, because the mean of its divisors is an integer number (10632182659).

Almost surely, 2^42528120277 is an apocalyptic number.

It is an amenable number.

42528120277 is a deficient number, since it is larger than the sum of its proper divisors (610359).

42528120277 is an equidigital number, since it uses as much as digits as its factorization.

42528120277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610358.

The product of its (nonzero) digits is 125440, while the sum is 40.

The spelling of 42528120277 in words is "forty-two billion, five hundred twenty-eight million, one hundred twenty thousand, two hundred seventy-seven".