42243355 has 32 divisors (see below), whose sum is σ = 63825408. Its totient is φ = 26073600.

The previous prime is 42243349. The next prime is 42243361. The reversal of 42243355 is 55334224.

It is an interprime number because it is at equal distance from previous prime (42243349) and next prime (42243361).

It is a de Polignac number, because none of the positive numbers 2^k-42243355 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 31 ways as a sum of consecutive naturals, for example, 43020 + ... + 43990.

It is an arithmetic number, because the mean of its divisors is an integer number (1994544).

Almost surely, 2^42243355 is an apocalyptic number.

42243355 is a deficient number, since it is larger than the sum of its proper divisors (21582053).

42243355 is a wasteful number, since it uses less digits than its factorization.

42243355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107.

The product of its digits is 14400, while the sum is 28.

The square root of 42243355 is about 6499.4888260539. The cubic root of 42243355 is about 348.2727279211.

Adding to 42243355 its reverse (55334224), we get a palindrome (97577579).

The spelling of 42243355 in words is "forty-two million, two hundred forty-three thousand, three hundred fifty-five".