427305261 has 8 divisors (see below), whose sum is σ = 570026080. Its totient is φ = 284727312.

The previous prime is 427305257. The next prime is 427305283. The reversal of 427305261 is 162503724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 427305261 - 2² = 427305257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427305211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28531 + ... + 40848.

It is an arithmetic number, because the mean of its divisors is an integer number (71253260).

Almost surely, 2^427305261 is an apocalyptic number.

It is an amenable number.

427305261 is a deficient number, since it is larger than the sum of its proper divisors (142720819).

427305261 is a wasteful number, since it uses less digits than its factorization.

427305261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71435.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 427305261 is about 20671.3633077260. The cubic root of 427305261 is about 753.2042235513.

Adding to 427305261 its reverse (162503724), we get a palindrome (589808985).

The spelling of 427305261 in words is "four hundred twenty-seven million, three hundred five thousand, two hundred sixty-one".