42206265 has 60 divisors (see below), whose sum is σ = 79492644. Its totient is φ = 21422016.

The previous prime is 42206251. The next prime is 42206267. The reversal of 42206265 is 56260224.

It can be written as a sum of positive squares in 2 ways, for example, as 31236921 + 10969344 = 5589^2 + 3312^2 .

It is not a de Polignac number, because 42206265 - 2⁴ = 42206249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42206267) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 214147 + ... + 214343.

Almost surely, 2^42206265 is an apocalyptic number.

42206265 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42206265 is a deficient number, since it is larger than the sum of its proper divisors (37286379).

42206265 is a wasteful number, since it uses less digits than its factorization.

42206265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 42206265 is about 6496.6348981607. The cubic root of 42206265 is about 348.1707693380.

Adding to 42206265 its reverse (56260224), we get a palindrome (98466489).

The spelling of 42206265 in words is "forty-two million, two hundred six thousand, two hundred sixty-five".