220429427 has 2 divisors, whose sum is σ = 220429428. Its totient is φ = 220429426.

The previous prime is 220429421. The next prime is 220429457. The reversal of 220429427 is 724924022.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220429427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220429393 and 220429402.

It is not a weakly prime, because it can be changed into another prime (220429421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110214713 + 110214714.

It is an arithmetic number, because the mean of its divisors is an integer number (110214714).

Almost surely, 2^220429427 is an apocalyptic number.

220429427 is a deficient number, since it is larger than the sum of its proper divisors (1).

220429427 is an equidigital number, since it uses as much as digits as its factorization.

220429427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 220429427 is about 14846.8658982292. The cubic root of 220429427 is about 604.0736016546.

The spelling of 220429427 in words is "two hundred twenty million, four hundred twenty-nine thousand, four hundred twenty-seven".