42407530 has 32 divisors (see below), whose sum is σ = 85313088. Its totient is φ = 15043200.

The previous prime is 42407509. The next prime is 42407531. The reversal of 42407530 is 3570424.

It is a super-3 number, since 3×42407530³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42407495 and 42407504.

It is not an unprimeable number, because it can be changed into a prime (42407531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192 + ... + 9211.

It is an arithmetic number, because the mean of its divisors is an integer number (2666034).

Almost surely, 2^42407530 is an apocalyptic number.

42407530 is an abundant number, since it is smaller than the sum of its proper divisors (42905558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42407530 is a wasteful number, since it uses less digits than its factorization.

42407530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9462.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 42407530 is about 6512.1064180494. The cubic root of 42407530 is about 348.7233215719.

Adding to 42407530 its reverse (3570424), we get a palindrome (45977954).

The spelling of 42407530 in words is "forty-two million, four hundred seven thousand, five hundred thirty".