42528407 has 8 divisors (see below), whose sum is σ = 45769392. Its totient is φ = 39369600.

The previous prime is 42528359. The next prime is 42528433. The reversal of 42528407 is 70482524.

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

It is a cyclic number.

It is not a de Polignac number, because 42528407 - 2⁸ = 42528151 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 (42528907) 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, 19469 + ... + 21542.

It is an arithmetic number, because the mean of its divisors is an integer number (5721174).

Almost surely, 2^42528407 is an apocalyptic number.

42528407 is a deficient number, since it is larger than the sum of its proper divisors (3240985).

42528407 is a wasteful number, since it uses less digits than its factorization.

42528407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41089.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 42528407 is about 6521.3807587044. The cubic root of 42528407 is about 349.0543370157.

The spelling of 42528407 in words is "forty-two million, five hundred twenty-eight thousand, four hundred seven".