10438913242 has 4 divisors (see below), whose sum is σ = 15658369866. Its totient is φ = 5219456620.

The previous prime is 10438913213. The next prime is 10438913263. The reversal of 10438913242 is 24231983401.

It is a Cunningham number, because it is equal to 102171²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24231983401 = 5171 ⋅4686131.

It can be written as a sum of positive squares in only one way, i.e., 10438913241 + 1 = 102171^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2609728309 + ... + 2609728312.

Almost surely, 2^10438913242 is an apocalyptic number.

10438913242 is a deficient number, since it is larger than the sum of its proper divisors (5219456624).

10438913242 is an equidigital number, since it uses as much as digits as its factorization.

10438913242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219456623.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 10438913242 in words is "ten billion, four hundred thirty-eight million, nine hundred thirteen thousand, two hundred forty-two".