42213755 has 8 divisors (see below), whose sum is σ = 51734592. Its totient is φ = 33052288.

The previous prime is 42213719. The next prime is 42213757. The reversal of 42213755 is 55731224.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42213755 - 2²² = 38019451 is a prime.

It is a super-2 number, since 2×42213755² = 3564002222400050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42213757) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 89582 + ... + 90051.

It is an arithmetic number, because the mean of its divisors is an integer number (6466824).

Almost surely, 2^42213755 is an apocalyptic number.

42213755 is a deficient number, since it is larger than the sum of its proper divisors (9520837).

42213755 is a wasteful number, since it uses less digits than its factorization.

42213755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179685.

The product of its digits is 8400, while the sum is 29.

The square root of 42213755 is about 6497.2113248685. The cubic root of 42213755 is about 348.1913637909.

Adding to 42213755 its reverse (55731224), we get a palindrome (97944979).

The spelling of 42213755 in words is "forty-two million, two hundred thirteen thousand, seven hundred fifty-five".