1246104857 has 4 divisors (see below), whose sum is σ = 1289074020. Its totient is φ = 1203135696.

The previous prime is 1246104851. The next prime is 1246104859. The reversal of 1246104857 is 7584016421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 789385216 + 456719641 = 28096^2 + 21371^2 .

It is a cyclic number.

It is not a de Polignac number, because 1246104857 - 2¹² = 1246100761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1246104857.

It is not an unprimeable number, because it can be changed into a prime (1246104851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21484538 + ... + 21484595.

It is an arithmetic number, because the mean of its divisors is an integer number (322268505).

Almost surely, 2^1246104857 is an apocalyptic number.

It is an amenable number.

1246104857 is a deficient number, since it is larger than the sum of its proper divisors (42969163).

1246104857 is an equidigital number, since it uses as much as digits as its factorization.

1246104857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42969162.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 1246104857 is about 35300.2104384662. The cubic root of 1246104857 is about 1076.0972699548.

The spelling of 1246104857 in words is "one billion, two hundred forty-six million, one hundred four thousand, eight hundred fifty-seven".