122140878 has 8 divisors (see below), whose sum is σ = 244281768. Its totient is φ = 40713624.

The previous prime is 122140861. The next prime is 122140883. The reversal of 122140878 is 878041221.

It is a happy number.

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

122140878 is an admirable number.

It is a super-3 number, since 3×122140878³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

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, 10178401 + ... + 10178412.

It is an arithmetic number, because the mean of its divisors is an integer number (30535221).

Almost surely, 2^122140878 is an apocalyptic number.

122140878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122140878 is a wasteful number, since it uses less digits than its factorization.

122140878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20356818.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 122140878 is about 11051.7364246529. The cubic root of 122140878 is about 496.1583970997.

The spelling of 122140878 in words is "one hundred twenty-two million, one hundred forty thousand, eight hundred seventy-eight".