220142471 has 2 divisors, whose sum is σ = 220142472. Its totient is φ = 220142470.

The previous prime is 220142467. The next prime is 220142513. The reversal of 220142471 is 174241022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220142471 - 2² = 220142467 is a prime.

It is a super-3 number, since 3×220142471³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220142431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110071235 + 110071236.

It is an arithmetic number, because the mean of its divisors is an integer number (110071236).

Almost surely, 2^220142471 is an apocalyptic number.

220142471 is a deficient number, since it is larger than the sum of its proper divisors (1).

220142471 is an equidigital number, since it uses as much as digits as its factorization.

220142471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 220142471 is about 14837.1988933221. The cubic root of 220142471 is about 603.8113592661.

Adding to 220142471 its reverse (174241022), we get a palindrome (394383493).

The spelling of 220142471 in words is "two hundred twenty million, one hundred forty-two thousand, four hundred seventy-one".