1248542045 has 8 divisors (see below), whose sum is σ = 1534793400. Its totient is φ = 974471680.

The previous prime is 1248541993. The next prime is 1248542111. The reversal of 1248542045 is 5402458421.

It can be written as a sum of positive squares in 4 ways, for example, as 26759929 + 1221782116 = 5173^2 + 34954^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1248542045 - 2¹² = 1248537949 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1248541996 and 1248542014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3045020 + ... + 3045429.

It is an arithmetic number, because the mean of its divisors is an integer number (191849175).

Almost surely, 2^1248542045 is an apocalyptic number.

It is an amenable number.

1248542045 is a deficient number, since it is larger than the sum of its proper divisors (286251355).

1248542045 is an equidigital number, since it uses as much as digits as its factorization.

1248542045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6090495.

The product of its (nonzero) digits is 51200, while the sum is 35.

The square root of 1248542045 is about 35334.7144462779. The cubic root of 1248542045 is about 1076.7983729052.

The spelling of 1248542045 in words is "one billion, two hundred forty-eight million, five hundred forty-two thousand, forty-five".