1245451534 has 4 divisors (see below), whose sum is σ = 1868177304. Its totient is φ = 622725766.

The previous prime is 1245451523. The next prime is 1245451553. The reversal of 1245451534 is 4351545421.

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

It is a super-2 number, since 2×1245451534² = 3102299047085906312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1245451534.

It is a congruent number.

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, 311362882 + ... + 311362885.

It is an arithmetic number, because the mean of its divisors is an integer number (467044326).

Almost surely, 2^1245451534 is an apocalyptic number.

1245451534 is a deficient number, since it is larger than the sum of its proper divisors (622725770).

1245451534 is an equidigital number, since it uses as much as digits as its factorization.

1245451534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622725769.

The product of its digits is 48000, while the sum is 34.

The square root of 1245451534 is about 35290.9554135334. The cubic root of 1245451534 is about 1075.9091739599.

Adding to 1245451534 its reverse (4351545421), we get a palindrome (5596996955).

The spelling of 1245451534 in words is "one billion, two hundred forty-five million, four hundred fifty-one thousand, five hundred thirty-four".