427574143 has 2 divisors, whose sum is σ = 427574144. Its totient is φ = 427574142.

The previous prime is 427574137. The next prime is 427574177. The reversal of 427574143 is 341475724.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427574143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427574743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213787071 + 213787072.

It is an arithmetic number, because the mean of its divisors is an integer number (213787072).

Almost surely, 2^427574143 is an apocalyptic number.

427574143 is a deficient number, since it is larger than the sum of its proper divisors (1).

427574143 is an equidigital number, since it uses as much as digits as its factorization.

427574143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 37.

The square root of 427574143 is about 20677.8660165888. The cubic root of 427574143 is about 753.3621751081.

The spelling of 427574143 in words is "four hundred twenty-seven million, five hundred seventy-four thousand, one hundred forty-three".