42520319 has 8 divisors (see below), whose sum is σ = 43182720. Its totient is φ = 41861656.

The previous prime is 42520273. The next prime is 42520327. The reversal of 42520319 is 91302524.

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 42520319 - 2⁸ = 42520063 is a prime.

It is a super-2 number, since 2×42520319² = 3615955055723522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42520369) 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, 29084 + ... + 30510.

It is an arithmetic number, because the mean of its divisors is an integer number (5397840).

Almost surely, 2^42520319 is an apocalyptic number.

42520319 is a deficient number, since it is larger than the sum of its proper divisors (662401).

42520319 is a wasteful number, since it uses less digits than its factorization.

42520319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 42520319 is about 6520.7606151430. The cubic root of 42520319 is about 349.0322080384.

The spelling of 42520319 in words is "forty-two million, five hundred twenty thousand, three hundred nineteen".