10123200442 has 4 divisors (see below), whose sum is σ = 15184800666. Its totient is φ = 5061600220.

The previous prime is 10123200419. The next prime is 10123200449. The reversal of 10123200442 is 24400232101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24400232101 = 7 ⋅3485747443.

It can be written as a sum of positive squares in only one way, i.e., 9152940241 + 970260201 = 95671^2 + 31149^2 .

It is not an unprimeable number, because it can be changed into a prime (10123200449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2530800109 + ... + 2530800112.

Almost surely, 2^10123200442 is an apocalyptic number.

10123200442 is a deficient number, since it is larger than the sum of its proper divisors (5061600224).

10123200442 is an equidigital number, since it uses as much as digits as its factorization.

10123200442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061600223.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10123200442 its reverse (24400232101), we get a palindrome (34523432543).

The spelling of 10123200442 in words is "ten billion, one hundred twenty-three million, two hundred thousand, four hundred forty-two".