1748138242 has 4 divisors (see below), whose sum is σ = 2622207366. Its totient is φ = 874069120.

The previous prime is 1748138219. The next prime is 1748138251. The reversal of 1748138242 is 2428318471.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2428318471 = 17 ⋅142842263.

It can be written as a sum of positive squares in only one way, i.e., 1729811281 + 18326961 = 41591^2 + 4281^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1748138195 and 1748138204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437034559 + ... + 437034562.

Almost surely, 2^1748138242 is an apocalyptic number.

1748138242 is a deficient number, since it is larger than the sum of its proper divisors (874069124).

1748138242 is an equidigital number, since it uses as much as digits as its factorization.

1748138242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874069123.

The product of its digits is 86016, while the sum is 40.

The square root of 1748138242 is about 41810.7431409680. The cubic root of 1748138242 is about 1204.6436374399.

The spelling of 1748138242 in words is "one billion, seven hundred forty-eight million, one hundred thirty-eight thousand, two hundred forty-two".