40243244402 has 4 divisors (see below), whose sum is σ = 60364866606. Its totient is φ = 20121622200.

The previous prime is 40243244387. The next prime is 40243244423. The reversal of 40243244402 is 20444234204.

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., 39478113481 + 765130921 = 198691^2 + 27661^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060811099 + ... + 10060811102.

Almost surely, 2^40243244402 is an apocalyptic number.

40243244402 is a deficient number, since it is larger than the sum of its proper divisors (20121622204).

40243244402 is a wasteful number, since it uses less digits than its factorization.

40243244402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20121622203.

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 40243244402 its reverse (20444234204), we get a palindrome (60687478606).

The spelling of 40243244402 in words is "forty billion, two hundred forty-three million, two hundred forty-four thousand, four hundred two".