40123240202 has 4 divisors (see below), whose sum is σ = 60184860306. Its totient is φ = 20061620100.

The previous prime is 40123240193. The next prime is 40123240211. The reversal of 40123240202 is 20204232104.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40123240193) and next prime (40123240211).

It can be written as a sum of positive squares in only one way, i.e., 20515119361 + 19608120841 = 143231^2 + 140029^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10030810049 + ... + 10030810052.

Almost surely, 2^40123240202 is an apocalyptic number.

40123240202 is a deficient number, since it is larger than the sum of its proper divisors (20061620104).

40123240202 is a wasteful number, since it uses less digits than its factorization.

40123240202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20061620103.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 40123240202 its reverse (20204232104), we get a palindrome (60327472306).

The spelling of 40123240202 in words is "forty billion, one hundred twenty-three million, two hundred forty thousand, two hundred two".