220240429 has 2 divisors, whose sum is σ = 220240430. Its totient is φ = 220240428.

The previous prime is 220240411. The next prime is 220240441. The reversal of 220240429 is 924042022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155002500 + 65237929 = 12450^2 + 8077^2 .

It is a cyclic number.

It is not a de Polignac number, because 220240429 - 2⁷ = 220240301 is a prime.

It is a super-2 number, since 2×220240429² = 97011693132208082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220240409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110120214 + 110120215.

It is an arithmetic number, because the mean of its divisors is an integer number (110120215).

Almost surely, 2^220240429 is an apocalyptic number.

It is an amenable number.

220240429 is a deficient number, since it is larger than the sum of its proper divisors (1).

220240429 is an equidigital number, since it uses as much as digits as its factorization.

220240429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 220240429 is about 14840.4996209696. The cubic root of 220240429 is about 603.9009064003.

The spelling of 220240429 in words is "two hundred twenty million, two hundred forty thousand, four hundred twenty-nine".