40048405042 has 4 divisors (see below), whose sum is σ = 60072607566. Its totient is φ = 20024202520.

The previous prime is 40048405039. The next prime is 40048405043. The reversal of 40048405042 is 24050484004.

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., 38750316201 + 1298088841 = 196851^2 + 36029^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40048404995 and 40048405013.

It is not an unprimeable number, because it can be changed into a prime (40048405043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012101259 + ... + 10012101262.

Almost surely, 2^40048405042 is an apocalyptic number.

40048405042 is a deficient number, since it is larger than the sum of its proper divisors (20024202524).

40048405042 is a wasteful number, since it uses less digits than its factorization.

40048405042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20024202523.

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 40048405042 its reverse (24050484004), we get a palindrome (64098889046).

The spelling of 40048405042 in words is "forty billion, forty-eight million, four hundred five thousand, forty-two".