122503978 has 8 divisors (see below), whose sum is σ = 185382468. Its totient is φ = 60709824.

The previous prime is 122503973. The next prime is 122503981. The reversal of 122503978 is 879305221.

It can be written as a sum of positive squares in 2 ways, for example, as 109348849 + 13155129 = 10457^2 + 3627^2 .

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

It is not an unprimeable number, because it can be changed into a prime (122503973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270801 + ... + 271252.

Almost surely, 2^122503978 is an apocalyptic number.

122503978 is a deficient number, since it is larger than the sum of its proper divisors (62878490).

122503978 is a wasteful number, since it uses less digits than its factorization.

122503978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542168.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 122503978 is about 11068.1515168523. The cubic root of 122503978 is about 496.6495700515.

It can be divided in two parts, 122 and 503978, that added together give a square (504100 = 710²).

The spelling of 122503978 in words is "one hundred twenty-two million, five hundred three thousand, nine hundred seventy-eight".