1245868247 has 16 divisors (see below), whose sum is σ = 1415793120. Its totient is φ = 1086825600.

The previous prime is 1245868243. The next prime is 1245868277. The reversal of 1245868247 is 7428685421.

It is a cyclic number.

It is not a de Polignac number, because 1245868247 - 2² = 1245868243 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 (1245868241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97997 + ... + 109977.

It is an arithmetic number, because the mean of its divisors is an integer number (88487070).

Almost surely, 2^1245868247 is an apocalyptic number.

1245868247 is a deficient number, since it is larger than the sum of its proper divisors (169924873).

1245868247 is a wasteful number, since it uses less digits than its factorization.

1245868247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12434.

The product of its digits is 860160, while the sum is 47.

The square root of 1245868247 is about 35296.8588829091. The cubic root of 1245868247 is about 1076.0291559726.

The spelling of 1245868247 in words is "one billion, two hundred forty-five million, eight hundred sixty-eight thousand, two hundred forty-seven".