1142820998 has 16 divisors (see below), whose sum is σ = 1920614544. Its totient is φ = 505424160.

The previous prime is 1142820997. The next prime is 1142821037. The reversal of 1142820998 is 8990282411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142820997) 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, 701165 + ... + 702792.

It is an arithmetic number, because the mean of its divisors is an integer number (120038409).

Almost surely, 2^1142820998 is an apocalyptic number.

1142820998 is a deficient number, since it is larger than the sum of its proper divisors (777793546).

1142820998 is a wasteful number, since it uses less digits than its factorization.

1142820998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404007.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 1142820998 is about 33805.6355952672. The cubic root of 1142820998 is about 1045.5048949430.

The spelling of 1142820998 in words is "one billion, one hundred forty-two million, eight hundred twenty thousand, nine hundred ninety-eight".