1249443720001 has 8 divisors (see below), whose sum is σ = 1261848357864. Its totient is φ = 1237039747200.

The previous prime is 1249443719933. The next prime is 1249443720013. The reversal of 1249443720001 is 1000273449421.

It can be written as a sum of positive squares in 4 ways, for example, as 697133153025 + 552310566976 = 834945^2 + 743176^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1249443720001 - 2²⁵ = 1249410165569 is a prime.

It is a super-2 number, since 2×1249443720001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1249443720101) by changing a digit.

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, 4167531 + ... + 4457263.

It is an arithmetic number, because the mean of its divisors is an integer number (157731044733).

Almost surely, 2^{1249443720001} is an apocalyptic number.

It is an amenable number.

1249443720001 is a deficient number, since it is larger than the sum of its proper divisors (12404637863).

1249443720001 is a wasteful number, since it uses less digits than its factorization.

1249443720001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332531.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 1249443720001 in words is "one trillion, two hundred forty-nine billion, four hundred forty-three million, seven hundred twenty thousand, one".