42520497 has 8 divisors (see below), whose sum is σ = 56725344. Its totient is φ = 28331328.

The previous prime is 42520487. The next prime is 42520501. The reversal of 42520497 is 79402524.

42520497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42520497 - 2⁶ = 42520433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42520447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5998 + ... + 11000.

It is an arithmetic number, because the mean of its divisors is an integer number (7090668).

Almost surely, 2^42520497 is an apocalyptic number.

It is an amenable number.

42520497 is a deficient number, since it is larger than the sum of its proper divisors (14204847).

42520497 is a wasteful number, since it uses less digits than its factorization.

42520497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7839.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 42520497 is about 6520.7742638432. The cubic root of 42520497 is about 349.0326950812.

The spelling of 42520497 in words is "forty-two million, five hundred twenty thousand, four hundred ninety-seven".