22405042 has 8 divisors (see below), whose sum is σ = 36662832. Its totient is φ = 10184100.

The previous prime is 22405039. The next prime is 22405043. The reversal of 22405042 is 24050422.

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

It is not an unprimeable number, because it can be changed into a prime (22405043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509184 + ... + 509227.

It is an arithmetic number, because the mean of its divisors is an integer number (4582854).

Almost surely, 2^22405042 is an apocalyptic number.

22405042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22405042 is a deficient number, since it is larger than the sum of its proper divisors (14257790).

22405042 is a wasteful number, since it uses less digits than its factorization.

22405042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018424.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 22405042 is about 4733.3964549782. The cubic root of 22405042 is about 281.9130979817.

Adding to 22405042 its reverse (24050422), we get a palindrome (46455464).

The spelling of 22405042 in words is "twenty-two million, four hundred five thousand, forty-two".