122155406 has 8 divisors (see below), whose sum is σ = 183308184. Its totient is φ = 61052680.

The previous prime is 122155403. The next prime is 122155417. The reversal of 122155406 is 604551221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122155403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5660 + ... + 16623.

It is an arithmetic number, because the mean of its divisors is an integer number (22913523).

Almost surely, 2^122155406 is an apocalyptic number.

122155406 is a deficient number, since it is larger than the sum of its proper divisors (61152778).

122155406 is a wasteful number, since it uses less digits than its factorization.

122155406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25026.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 122155406 is about 11052.3936773895. The cubic root of 122155406 is about 496.1780681100.

The spelling of 122155406 in words is "one hundred twenty-two million, one hundred fifty-five thousand, four hundred six".