1248962921 has 2 divisors, whose sum is σ = 1248962922. Its totient is φ = 1248962920.

The previous prime is 1248962873. The next prime is 1248962941. The reversal of 1248962921 is 1292698421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1210274521 + 38688400 = 34789^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1248962921 - 2²² = 1244768617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1248962941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624481460 + 624481461.

It is an arithmetic number, because the mean of its divisors is an integer number (624481461).

Almost surely, 2^1248962921 is an apocalyptic number.

It is an amenable number.

1248962921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248962921 is an equidigital number, since it uses as much as digits as its factorization.

1248962921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 1248962921 is about 35340.6695041280. The cubic root of 1248962921 is about 1076.9193533933.

The spelling of 1248962921 in words is "one billion, two hundred forty-eight million, nine hundred sixty-two thousand, nine hundred twenty-one".