122190842 has 8 divisors (see below), whose sum is σ = 183457236. Its totient is φ = 61038432.

The previous prime is 122190839. The next prime is 122190847. The reversal of 122190842 is 248091221.

It can be written as a sum of positive squares in 2 ways, for example, as 106894921 + 15295921 = 10339^2 + 3911^2 .

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 (122190847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25763 + ... + 30134.

Almost surely, 2^122190842 is an apocalyptic number.

122190842 is a deficient number, since it is larger than the sum of its proper divisors (61266394).

122190842 is a wasteful number, since it uses less digits than its factorization.

122190842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56992.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 122190842 is about 11053.9966527949. The cubic root of 122190842 is about 496.2260421531.

The spelling of 122190842 in words is "one hundred twenty-two million, one hundred ninety thousand, eight hundred forty-two".