42407265 has 16 divisors (see below), whose sum is σ = 71843328. Its totient is φ = 21286656.

The previous prime is 42407257. The next prime is 42407303. The reversal of 42407265 is 56270424.

It is not a de Polignac number, because 42407265 - 2³ = 42407257 is a prime.

It is a super-2 number, since 2×42407265² = 3596752249560450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82897 + ... + 83406.

It is an arithmetic number, because the mean of its divisors is an integer number (4490208).

Almost surely, 2^42407265 is an apocalyptic number.

It is an amenable number.

42407265 is a deficient number, since it is larger than the sum of its proper divisors (29436063).

42407265 is a wasteful number, since it uses less digits than its factorization.

42407265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166328.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 42407265 is about 6512.0860712985. The cubic root of 42407265 is about 348.7225951925.

Adding to 42407265 its reverse (56270424), we get a palindrome (98677689).

The spelling of 42407265 in words is "forty-two million, four hundred seven thousand, two hundred sixty-five".