123200998 has 4 divisors (see below), whose sum is σ = 184801500. Its totient is φ = 61600498.

The previous prime is 123200983. The next prime is 123200999. The reversal of 123200998 is 899002321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 899002321 = 7 ⋅128428903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123200999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30800248 + ... + 30800251.

It is an arithmetic number, because the mean of its divisors is an integer number (46200375).

Almost surely, 2^123200998 is an apocalyptic number.

123200998 is a deficient number, since it is larger than the sum of its proper divisors (61600502).

123200998 is an equidigital number, since it uses as much as digits as its factorization.

123200998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61600501.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 123200998 is about 11099.5944970976. The cubic root of 123200998 is about 497.5897305385.

The spelling of 123200998 in words is "one hundred twenty-three million, two hundred thousand, nine hundred ninety-eight".