1245542573 has 4 divisors (see below), whose sum is σ = 1358773728. Its totient is φ = 1132311420.

The previous prime is 1245542527. The next prime is 1245542579. The reversal of 1245542573 is 3752455421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1245542573 - 2⁸ = 1245542317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245542579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56615561 + ... + 56615582.

It is an arithmetic number, because the mean of its divisors is an integer number (339693432).

Almost surely, 2^1245542573 is an apocalyptic number.

It is an amenable number.

1245542573 is a deficient number, since it is larger than the sum of its proper divisors (113231155).

1245542573 is a wasteful number, since it uses less digits than its factorization.

1245542573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113231154.

The product of its digits is 168000, while the sum is 38.

The square root of 1245542573 is about 35292.2452246949. The cubic root of 1245542573 is about 1075.9353886315.

Adding to 1245542573 its reverse (3752455421), we get a palindrome (4997997994).

The spelling of 1245542573 in words is "one billion, two hundred forty-five million, five hundred forty-two thousand, five hundred seventy-three".