245242122133 has 8 divisors (see below), whose sum is σ = 246673160856. Its totient is φ = 243811238400.

The previous prime is 245242122101. The next prime is 245242122143. The reversal of 245242122133 is 331221242542.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28824569284 + 216417552849 = 169778^2 + 465207^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245242122133 - 2⁵ = 245242122101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245242122095 and 245242122104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245242122143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5145693 + ... + 5193133.

It is an arithmetic number, because the mean of its divisors is an integer number (30834145107).

Almost surely, 2^245242122133 is an apocalyptic number.

It is an amenable number.

245242122133 is a deficient number, since it is larger than the sum of its proper divisors (1431038723).

245242122133 is a wasteful number, since it uses less digits than its factorization.

245242122133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77495.

The product of its digits is 23040, while the sum is 31.

Adding to 245242122133 its reverse (331221242542), we get a palindrome (576463364675).

The spelling of 245242122133 in words is "two hundred forty-five billion, two hundred forty-two million, one hundred twenty-two thousand, one hundred thirty-three".