1421248245 has 8 divisors (see below), whose sum is σ = 2273997216. Its totient is φ = 757999056.

The previous prime is 1421248219. The next prime is 1421248277. The reversal of 1421248245 is 5428421241.

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

It is not a de Polignac number, because 1421248245 - 2⁹ = 1421247733 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47374927 + ... + 47374956.

It is an arithmetic number, because the mean of its divisors is an integer number (284249652).

Almost surely, 2^1421248245 is an apocalyptic number.

1421248245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1421248245 is a deficient number, since it is larger than the sum of its proper divisors (852748971).

1421248245 is an equidigital number, since it uses as much as digits as its factorization.

1421248245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94749891.

The product of its digits is 20480, while the sum is 33.

The square root of 1421248245 is about 37699.4462160918. The cubic root of 1421248245 is about 1124.3201146312.

Adding to 1421248245 its reverse (5428421241), we get a palindrome (6849669486).

The spelling of 1421248245 in words is "one billion, four hundred twenty-one million, two hundred forty-eight thousand, two hundred forty-five".