1021241998 has 16 divisors (see below), whose sum is σ = 1826818560. Its totient is φ = 418645656.

The previous prime is 1021241987. The next prime is 1021242011. The reversal of 1021241998 is 8991421201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1585458 + ... + 1586101.

It is an arithmetic number, because the mean of its divisors is an integer number (114176160).

Almost surely, 2^1021241998 is an apocalyptic number.

1021241998 is a deficient number, since it is larger than the sum of its proper divisors (805576562).

1021241998 is a wasteful number, since it uses less digits than its factorization.

1021241998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171591.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 1021241998 is about 31956.8771628268. The cubic root of 1021241998 is about 1007.0311135772.

The spelling of 1021241998 in words is "one billion, twenty-one million, two hundred forty-one thousand, nine hundred ninety-eight".