40424002 has 4 divisors (see below), whose sum is σ = 60636006. Its totient is φ = 20212000.

The previous prime is 40423993. The next prime is 40424009. The reversal of 40424002 is 20042404.

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., 40182921 + 241081 = 6339^2 + 491^2 .

It is not an unprimeable number, because it can be changed into a prime (40424009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105999 + ... + 10106002.

Almost surely, 2^40424002 is an apocalyptic number.

40424002 is a deficient number, since it is larger than the sum of its proper divisors (20212004).

40424002 is a wasteful number, since it uses less digits than its factorization.

40424002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20212003.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 40424002 is about 6357.9872601319. The cubic root of 40424002 is about 343.1993333447.

Adding to 40424002 its reverse (20042404), we get a palindrome (60466406).

The spelling of 40424002 in words is "forty million, four hundred twenty-four thousand, two".