122978242 has 8 divisors (see below), whose sum is σ = 186540300. Its totient is φ = 60798144.

The previous prime is 122978231. The next prime is 122978281. The reversal of 122978242 is 242879221.

It can be written as a sum of positive squares in 2 ways, for example, as 122965921 + 12321 = 11089^2 + 111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345267 + ... + 345622.

Almost surely, 2^122978242 is an apocalyptic number.

122978242 is a deficient number, since it is larger than the sum of its proper divisors (63562058).

122978242 is an equidigital number, since it uses as much as digits as its factorization.

122978242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690980.

The product of its digits is 32256, while the sum is 37.

The square root of 122978242 is about 11089.5555366300. Note that the first 4 decimals coincide. The cubic root of 122978242 is about 497.2896572983.

The spelling of 122978242 in words is "one hundred twenty-two million, nine hundred seventy-eight thousand, two hundred forty-two".