245140434 has 108 divisors (see below), whose sum is σ = 679424382. Its totient is φ = 63645120.

The previous prime is 245140403. The next prime is 245140439. The reversal of 245140434 is 434041542.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 211789809 + 33350625 = 14553^2 + 5775^2 .

It is a junction number, because it is equal to n+sod(n) for n = 245140398 and 245140407.

It is not an unprimeable number, because it can be changed into a prime (245140439) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 105574 + ... + 107870.

Almost surely, 2^245140434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245140434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339712191).

245140434 is an abundant number, since it is smaller than the sum of its proper divisors (434283948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245140434 is a wasteful number, since it uses less digits than its factorization.

245140434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341 (or 2320 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 245140434 is about 15656.9611994154. The cubic root of 245140434 is about 625.8520083497.

Adding to 245140434 its reverse (434041542), we get a palindrome (679181976).

The spelling of 245140434 in words is "two hundred forty-five million, one hundred forty thousand, four hundred thirty-four".