243123098 has 4 divisors (see below), whose sum is σ = 364684650. Its totient is φ = 121561548.

The previous prime is 243123091. The next prime is 243123113. The reversal of 243123098 is 890321342.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 227496889 + 15626209 = 15083^2 + 3953^2 .

It is a super-2 number, since 2×243123098² = 118217681562235208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243123091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60780773 + ... + 60780776.

Almost surely, 2^243123098 is an apocalyptic number.

243123098 is a deficient number, since it is larger than the sum of its proper divisors (121561552).

243123098 is a wasteful number, since it uses less digits than its factorization.

243123098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121561551.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 243123098 is about 15592.4051383999. The cubic root of 243123098 is about 624.1305012092.

The spelling of 243123098 in words is "two hundred forty-three million, one hundred twenty-three thousand, ninety-eight".