854172122 has 4 divisors (see below), whose sum is σ = 1281258186. Its totient is φ = 427086060.

The previous prime is 854172107. The next prime is 854172127. The reversal of 854172122 is 221271458.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 839202961 + 14969161 = 28969^2 + 3869^2 .

It is a super-2 number, since 2×854172122² = 1459220028003965768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (854172127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213543029 + ... + 213543032.

Almost surely, 2^854172122 is an apocalyptic number.

854172122 is a deficient number, since it is larger than the sum of its proper divisors (427086064).

854172122 is a wasteful number, since it uses less digits than its factorization.

854172122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427086063.

The product of its digits is 8960, while the sum is 32.

The square root of 854172122 is about 29226.2231908264. The cubic root of 854172122 is about 948.8155587789.

The spelling of 854172122 in words is "eight hundred fifty-four million, one hundred seventy-two thousand, one hundred twenty-two".