1242432198 has 96 divisors (see below), whose sum is σ = 3195279360. Its totient is φ = 341418240.

The previous prime is 1242432133. The next prime is 1242432203. The reversal of 1242432198 is 8912342421.

1242432198 is a `hidden beast` number, since 1 + 242 + 4 + 321 + 98 = 666.

It is a super-2 number, since 2×1242432198² = 3087275533254222408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 698286 + ... + 700062.

It is an arithmetic number, because the mean of its divisors is an integer number (33284160).

Almost surely, 2^1242432198 is an apocalyptic number.

1242432198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242432198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597639680).

1242432198 is an abundant number, since it is smaller than the sum of its proper divisors (1952847162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242432198 is a wasteful number, since it uses less digits than its factorization.

1242432198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002 (or 1999 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1242432198 is about 35248.1516962237. The cubic root of 1242432198 is about 1075.0390317178.

The spelling of 1242432198 in words is "one billion, two hundred forty-two million, four hundred thirty-two thousand, one hundred ninety-eight".