275905242 has 12 divisors (see below), whose sum is σ = 597794730. Its totient is φ = 91968408.

The previous prime is 275905241. The next prime is 275905247. The reversal of 275905242 is 242509572.

It is a happy number.

275905242 is a `hidden beast` number, since 27 + 590 + 5 + 2 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 208484721 + 67420521 = 14439^2 + 8211^2 .

It is a super-2 number, since 2×275905242² = 152247405126157128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 275905197 and 275905206.

It is not an unprimeable number, because it can be changed into a prime (275905241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7664017 + ... + 7664052.

Almost surely, 2^275905242 is an apocalyptic number.

275905242 is an abundant number, since it is smaller than the sum of its proper divisors (321889488).

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

275905242 is a wasteful number, since it uses less digits than its factorization.

275905242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15328077 (or 15328074 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 275905242 is about 16610.3956003462. The cubic root of 275905242 is about 651.0084873634.

The spelling of 275905242 in words is "two hundred seventy-five million, nine hundred five thousand, two hundred forty-two".