1253450434 has 4 divisors (see below), whose sum is σ = 1880175654. Its totient is φ = 626725216.

The previous prime is 1253450417. The next prime is 1253450447. The reversal of 1253450434 is 4340543521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4340543521 = 19 ⋅228449659.

It can be written as a sum of positive squares in only one way, i.e., 865242225 + 388208209 = 29415^2 + 19703^2 .

It is a super-2 number, since 2×1253450434² = 3142275980989576712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1253450396 and 1253450405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313362607 + ... + 313362610.

Almost surely, 2^1253450434 is an apocalyptic number.

1253450434 is a deficient number, since it is larger than the sum of its proper divisors (626725220).

1253450434 is an equidigital number, since it uses as much as digits as its factorization.

1253450434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626725219.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 1253450434 is about 35404.1019374874. The cubic root of 1253450434 is about 1078.2075990531.

Adding to 1253450434 its reverse (4340543521), we get a palindrome (5593993955).

The spelling of 1253450434 in words is "one billion, two hundred fifty-three million, four hundred fifty thousand, four hundred thirty-four".