122864149 has 4 divisors (see below), whose sum is σ = 122894860. Its totient is φ = 122833440.

The previous prime is 122864113. The next prime is 122864171. The reversal of 122864149 is 941468221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26471025 + 96393124 = 5145^2 + 9818^2 .

It is a cyclic number.

It is not a de Polignac number, because 122864149 - 2¹⁷ = 122733077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122864179) 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, 8262 + ... + 17719.

It is an arithmetic number, because the mean of its divisors is an integer number (30723715).

Almost surely, 2^122864149 is an apocalyptic number.

It is an amenable number.

122864149 is a deficient number, since it is larger than the sum of its proper divisors (30711).

122864149 is an equidigital number, since it uses as much as digits as its factorization.

122864149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30710.

The product of its digits is 27648, while the sum is 37.

The square root of 122864149 is about 11084.4101782639. The cubic root of 122864149 is about 497.1358229750.

The spelling of 122864149 in words is "one hundred twenty-two million, eight hundred sixty-four thousand, one hundred forty-nine".