7742438354 has 12 divisors (see below), whose sum is σ = 13509765054. Its totient is φ = 3318187824.

The previous prime is 7742438351. The next prime is 7742438377. The reversal of 7742438354 is 4538342477.

It can be written as a sum of positive squares in only one way, i.e., 5469342025 + 2273096329 = 73955^2 + 47677^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7742438299 and 7742438308.

It is not an unprimeable number, because it can be changed into a prime (7742438351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39502139 + ... + 39502334.

Almost surely, 2^7742438354 is an apocalyptic number.

7742438354 is a deficient number, since it is larger than the sum of its proper divisors (5767326700).

7742438354 is a wasteful number, since it uses less digits than its factorization.

7742438354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79004489 (or 79004482 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 47.

The square root of 7742438354 is about 87991.1265639894. The cubic root of 7742438354 is about 1978.3019787296.

The spelling of 7742438354 in words is "seven billion, seven hundred forty-two million, four hundred thirty-eight thousand, three hundred fifty-four".