1142890198 has 8 divisors (see below), whose sum is σ = 1746681408. Its totient is φ = 560663064.

The previous prime is 1142890153. The next prime is 1142890201. The reversal of 1142890198 is 8910982411.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5390886 + ... + 5391097.

It is an arithmetic number, because the mean of its divisors is an integer number (218335176).

Almost surely, 2^1142890198 is an apocalyptic number.

1142890198 is a deficient number, since it is larger than the sum of its proper divisors (603791210).

1142890198 is a wasteful number, since it uses less digits than its factorization.

1142890198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10782038.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 1142890198 is about 33806.6590777616. The cubic root of 1142890198 is about 1045.5259969583.

The spelling of 1142890198 in words is "one billion, one hundred forty-two million, eight hundred ninety thousand, one hundred ninety-eight".