427143643 has 2 divisors, whose sum is σ = 427143644. Its totient is φ = 427143642.

The previous prime is 427143611. The next prime is 427143707. The reversal of 427143643 is 346341724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427143643 - 2⁵ = 427143611 is a prime.

It is a super-2 number, since 2×427143643² = 364903383510622898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 427143599 and 427143608.

It is not a weakly prime, because it can be changed into another prime (427123643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213571821 + 213571822.

It is an arithmetic number, because the mean of its divisors is an integer number (213571822).

Almost surely, 2^427143643 is an apocalyptic number.

427143643 is a deficient number, since it is larger than the sum of its proper divisors (1).

427143643 is an equidigital number, since it uses as much as digits as its factorization.

427143643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 34.

The square root of 427143643 is about 20667.4537135081. The cubic root of 427143643 is about 753.1092510793.

The spelling of 427143643 in words is "four hundred twenty-seven million, one hundred forty-three thousand, six hundred forty-three".