42241618 has 4 divisors (see below), whose sum is σ = 63362430. Its totient is φ = 21120808.

The previous prime is 42241607. The next prime is 42241627. The reversal of 42241618 is 81614224.

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

It can be written as a sum of positive squares in only one way, i.e., 33790969 + 8450649 = 5813^2 + 2907^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560403 + ... + 10560406.

Almost surely, 2^42241618 is an apocalyptic number.

42241618 is a deficient number, since it is larger than the sum of its proper divisors (21120812).

42241618 is a wasteful number, since it uses less digits than its factorization.

42241618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21120811.

The product of its digits is 3072, while the sum is 28.

The square root of 42241618 is about 6499.3551987870. The cubic root of 42241618 is about 348.2679543259.

The spelling of 42241618 in words is "forty-two million, two hundred forty-one thousand, six hundred eighteen".