40223242 has 4 divisors (see below), whose sum is σ = 60334866. Its totient is φ = 20111620.

The previous prime is 40223233. The next prime is 40223257. The reversal of 40223242 is 24232204.

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., 31348801 + 8874441 = 5599^2 + 2979^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055809 + ... + 10055812.

Almost surely, 2^40223242 is an apocalyptic number.

40223242 is a deficient number, since it is larger than the sum of its proper divisors (20111624).

40223242 is a wasteful number, since it uses less digits than its factorization.

40223242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20111623.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40223242 is about 6342.1795937990. The cubic root of 40223242 is about 342.6302401302.

Adding to 40223242 its reverse (24232204), we get a palindrome (64455446).

The spelling of 40223242 in words is "forty million, two hundred twenty-three thousand, two hundred forty-two".