427540275 has 42 divisors (see below), whose sum is σ = 794895180. Its totient is φ = 228011760.

The previous prime is 427540237. The next prime is 427540319. The reversal of 427540275 is 572045724.

It is a happy number.

427540275 is a `hidden beast` number, since 42 + 7 + 540 + 2 + 75 = 666.

It is not a de Polignac number, because 427540275 - 2¹⁹ = 427015987 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 6496 + ... + 29954.

Almost surely, 2^427540275 is an apocalyptic number.

427540275 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

427540275 is a deficient number, since it is larger than the sum of its proper divisors (367354905).

427540275 is an equidigital number, since it uses as much as digits as its factorization.

427540275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23487 (or 23467 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 427540275 is about 20677.0470570631. The cubic root of 427540275 is about 753.3422833971.

Adding to 427540275 its reverse (572045724), we get a palindrome (999585999).

The spelling of 427540275 in words is "four hundred twenty-seven million, five hundred forty thousand, two hundred seventy-five".