1248764201 has 4 divisors (see below), whose sum is σ = 1248838992. Its totient is φ = 1248689412.

The previous prime is 1248764191. The next prime is 1248764219. The reversal of 1248764201 is 1024678421.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1248764201 - 2¹⁰ = 1248763177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1248764261) 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, 350 + ... + 49976.

It is an arithmetic number, because the mean of its divisors is an integer number (312209748).

Almost surely, 2^1248764201 is an apocalyptic number.

It is an amenable number.

1248764201 is a deficient number, since it is larger than the sum of its proper divisors (74791).

1248764201 is an equidigital number, since it uses as much as digits as its factorization.

1248764201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74790.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 1248764201 is about 35337.8579005576. The cubic root of 1248764201 is about 1076.8622348669.

The spelling of 1248764201 in words is "one billion, two hundred forty-eight million, seven hundred sixty-four thousand, two hundred one".