424022155 has 4 divisors (see below), whose sum is σ = 508826592. Its totient is φ = 339217720.

The previous prime is 424022149. The next prime is 424022167. The reversal of 424022155 is 551220424.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 424022155 - 2³ = 424022147 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42402211 + ... + 42402220.

It is an arithmetic number, because the mean of its divisors is an integer number (127206648).

Almost surely, 2^424022155 is an apocalyptic number.

424022155 is a deficient number, since it is larger than the sum of its proper divisors (84804437).

424022155 is an equidigital number, since it uses as much as digits as its factorization.

424022155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84804436.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 424022155 is about 20591.7982459036. The cubic root of 424022155 is about 751.2702356023.

Adding to 424022155 its reverse (551220424), we get a palindrome (975242579).

The spelling of 424022155 in words is "four hundred twenty-four million, twenty-two thousand, one hundred fifty-five".