1305252434 has 4 divisors (see below), whose sum is σ = 1957878654. Its totient is φ = 652626216.

The previous prime is 1305252433. The next prime is 1305252499. The reversal of 1305252434 is 4342525031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 844076809 + 461175625 = 29053^2 + 21475^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1305252397 and 1305252406.

It is not an unprimeable number, because it can be changed into a prime (1305252433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326313107 + ... + 326313110.

Almost surely, 2^1305252434 is an apocalyptic number.

1305252434 is a deficient number, since it is larger than the sum of its proper divisors (652626220).

1305252434 is an equidigital number, since it uses as much as digits as its factorization.

1305252434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652626219.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1305252434 is about 36128.2774845411. The cubic root of 1305252434 is about 1092.8607717806.

Adding to 1305252434 its reverse (4342525031), we get a palindrome (5647777465).

The spelling of 1305252434 in words is "one billion, three hundred five million, two hundred fifty-two thousand, four hundred thirty-four".