1098421142 has 32 divisors (see below), whose sum is σ = 2069256000. Its totient is φ = 434536704.

The previous prime is 1098421127. The next prime is 1098421193. The reversal of 1098421142 is 2411248901.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1098421099 and 1098421108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52667 + ... + 70502.

It is an arithmetic number, because the mean of its divisors is an integer number (64664250).

Almost surely, 2^1098421142 is an apocalyptic number.

1098421142 is a deficient number, since it is larger than the sum of its proper divisors (970834858).

1098421142 is a wasteful number, since it uses less digits than its factorization.

1098421142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123205 (or 123191 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1098421142 is about 33142.4371765264. The cubic root of 1098421142 is about 1031.7859929967.

The spelling of 1098421142 in words is "one billion, ninety-eight million, four hundred twenty-one thousand, one hundred forty-two".