40023002 has 4 divisors (see below), whose sum is σ = 60034506. Its totient is φ = 20011500.

The previous prime is 40022999. The next prime is 40023007. The reversal of 40023002 is 20032004.

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., 30591961 + 9431041 = 5531^2 + 3071^2 .

It is not an unprimeable number, because it can be changed into a prime (40023007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005749 + ... + 10005752.

Almost surely, 2^40023002 is an apocalyptic number.

40023002 is a deficient number, since it is larger than the sum of its proper divisors (20011504).

40023002 is a wasteful number, since it uses less digits than its factorization.

40023002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20011503.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 40023002 is about 6326.3735267529. The cubic root of 40023002 is about 342.0607315515.

Adding to 40023002 its reverse (20032004), we get a palindrome (60055006).

The spelling of 40023002 in words is "forty million, twenty-three thousand, two".