1298421142 has 16 divisors (see below), whose sum is σ = 1982267280. Its totient is φ = 637683552.

The previous prime is 1298421109. The next prime is 1298421161. The reversal of 1298421142 is 2411248921.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1298421098 and 1298421107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167668 + ... + 175240.

It is an arithmetic number, because the mean of its divisors is an integer number (123891705).

Almost surely, 2^1298421142 is an apocalyptic number.

1298421142 is a deficient number, since it is larger than the sum of its proper divisors (683846138).

1298421142 is a wasteful number, since it uses less digits than its factorization.

1298421142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9087.

The product of its digits is 9216, while the sum is 34.

The square root of 1298421142 is about 36033.6112816909. The cubic root of 1298421142 is about 1090.9508696125.

The spelling of 1298421142 in words is "one billion, two hundred ninety-eight million, four hundred twenty-one thousand, one hundred forty-two".