742809109953 has 4 divisors (see below), whose sum is σ = 990412146608. Its totient is φ = 495206073300.

The previous prime is 742809109879. The next prime is 742809110033. The reversal of 742809109953 is 359901908247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 742809109953 - 2¹⁷ = 742808978881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 742809109893 and 742809109902.

It is not an unprimeable number, because it can be changed into a prime (742809109753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123801518323 + ... + 123801518328.

It is an arithmetic number, because the mean of its divisors is an integer number (247603036652).

Almost surely, 2^742809109953 is an apocalyptic number.

It is an amenable number.

742809109953 is a deficient number, since it is larger than the sum of its proper divisors (247603036655).

742809109953 is a wasteful number, since it uses less digits than its factorization.

742809109953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247603036654.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 742809109953 in words is "seven hundred forty-two billion, eight hundred nine million, one hundred nine thousand, nine hundred fifty-three".