7440544042 has 4 divisors (see below), whose sum is σ = 11160816066. Its totient is φ = 3720272020.

The previous prime is 7440543989. The next prime is 7440544043. The reversal of 7440544042 is 2404450447.

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., 7221770361 + 218773681 = 84981^2 + 14791^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7440543989 and 7440544007.

It is not an unprimeable number, because it can be changed into a prime (7440544043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860136009 + ... + 1860136012.

Almost surely, 2^7440544042 is an apocalyptic number.

7440544042 is a deficient number, since it is larger than the sum of its proper divisors (3720272024).

7440544042 is a wasteful number, since it uses less digits than its factorization.

7440544042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720272023.

The product of its (nonzero) digits is 71680, while the sum is 34.

The square root of 7440544042 is about 86258.5882216954. The cubic root of 7440544042 is about 1952.2475983529.

Adding to 7440544042 its reverse (2404450447), we get a palindrome (9844994489).

The spelling of 7440544042 in words is "seven billion, four hundred forty million, five hundred forty-four thousand, forty-two".