42528291 has 8 divisors (see below), whose sum is σ = 61066320. Its totient is φ = 26171232.

The previous prime is 42528259. The next prime is 42528293. The reversal of 42528291 is 19282524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42528291 - 2⁵ = 42528259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42528293) 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, 545196 + ... + 545273.

It is an arithmetic number, because the mean of its divisors is an integer number (7633290).

Almost surely, 2^42528291 is an apocalyptic number.

42528291 is a deficient number, since it is larger than the sum of its proper divisors (18538029).

42528291 is a wasteful number, since it uses less digits than its factorization.

42528291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090485.

The product of its digits is 11520, while the sum is 33.

The square root of 42528291 is about 6521.3718648763. The cubic root of 42528291 is about 349.0540196566.

The spelling of 42528291 in words is "forty-two million, five hundred twenty-eight thousand, two hundred ninety-one".