1243040098 has 8 divisors (see below), whose sum is σ = 1868224860. Its totient is φ = 620298480.

The previous prime is 1243040081. The next prime is 1243040147. The reversal of 1243040098 is 8900403421.

It can be written as a sum of positive squares in 2 ways, for example, as 896223969 + 346816129 = 29937^2 + 18623^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609513 + ... + 611548.

Almost surely, 2^1243040098 is an apocalyptic number.

1243040098 is a deficient number, since it is larger than the sum of its proper divisors (625184762).

1243040098 is a wasteful number, since it uses less digits than its factorization.

1243040098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221572.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1243040098 is about 35256.7737888764. The cubic root of 1243040098 is about 1075.2143356292.

The spelling of 1243040098 in words is "one billion, two hundred forty-three million, forty thousand, ninety-eight".