40424442242 has 12 divisors (see below), whose sum is σ = 61681833366. Its totient is φ = 19869637680.

The previous prime is 40424442197. The next prime is 40424442263. The reversal of 40424442242 is 24224442404.

It can be written as a sum of positive squares in only one way, i.e., 22973768041 + 17450674201 = 151571^2 + 132101^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40424442199 and 40424442208.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2896259 + ... + 2910182.

Almost surely, 2^40424442242 is an apocalyptic number.

40424442242 is a deficient number, since it is larger than the sum of its proper divisors (21257391124).

40424442242 is an equidigital number, since it uses as much as digits as its factorization.

40424442242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5806561 (or 5806502 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 40424442242 its reverse (24224442404), we get a palindrome (64648884646).

The spelling of 40424442242 in words is "forty billion, four hundred twenty-four million, four hundred forty-two thousand, two hundred forty-two".