122499998 has 4 divisors (see below), whose sum is σ = 183750000. Its totient is φ = 61249998.

The previous prime is 122499997. The next prime is 122500019. The reversal of 122499998 is 899994221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122499997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30624998 + ... + 30625001.

It is an arithmetic number, because the mean of its divisors is an integer number (45937500).

Almost surely, 2^122499998 is an apocalyptic number.

122499998 is a deficient number, since it is larger than the sum of its proper divisors (61250002).

122499998 is an equidigital number, since it uses as much as digits as its factorization.

122499998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61250001.

The product of its digits is 839808, while the sum is 53.

The square root of 122499998 is about 11067.9717202385. The cubic root of 122499998 is about 496.6441914868.

The spelling of 122499998 in words is "one hundred twenty-two million, four hundred ninety-nine thousand, nine hundred ninety-eight".