40904292242 has 18 divisors (see below), whose sum is σ = 67446562197. Its totient is φ = 18591430000.

The previous prime is 40904292239. The next prime is 40904292271. The reversal of 40904292242 is 24229240904.

It is a happy number.

40904292242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 24982647481 + 15921644761 = 158059^2 + 126181^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=143011.

It is a super-2 number, since 2×40904292242² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40904292196 and 40904292205.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3139742 + ... + 3152742.

Almost surely, 2^40904292242 is an apocalyptic number.

40904292242 is a deficient number, since it is larger than the sum of its proper divisors (26542269955).

40904292242 is an frugal number, since it uses more digits than its factorization.

40904292242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26026 (or 13014 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 40904292242 in words is "forty billion, nine hundred four million, two hundred ninety-two thousand, two hundred forty-two".