1242479998 has 16 divisors (see below), whose sum is σ = 1872246960. Its totient is φ = 618404416.

The previous prime is 1242479993. The next prime is 1242479999. The reversal of 1242479998 is 8999742421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242479993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560340 + ... + 562552.

It is an arithmetic number, because the mean of its divisors is an integer number (117015435).

Almost surely, 2^1242479998 is an apocalyptic number.

1242479998 is a deficient number, since it is larger than the sum of its proper divisors (629766962).

1242479998 is a wasteful number, since it uses less digits than its factorization.

1242479998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371.

The product of its digits is 2612736, while the sum is 55.

The square root of 1242479998 is about 35248.8297394396. The cubic root of 1242479998 is about 1075.0528181728.

The spelling of 1242479998 in words is "one billion, two hundred forty-two million, four hundred seventy-nine thousand, nine hundred ninety-eight".