122149407 has 4 divisors (see below), whose sum is σ = 162865880. Its totient is φ = 81432936.

The previous prime is 122149387. The next prime is 122149427. The reversal of 122149407 is 704941221.

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

It is an interprime number because it is at equal distance from previous prime (122149387) and next prime (122149427).

It is not a de Polignac number, because 122149407 - 2¹¹ = 122147359 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 (122149427) 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, 20358232 + ... + 20358237.

It is an arithmetic number, because the mean of its divisors is an integer number (40716470).

Almost surely, 2^122149407 is an apocalyptic number.

122149407 is a deficient number, since it is larger than the sum of its proper divisors (40716473).

122149407 is an equidigital number, since it uses as much as digits as its factorization.

122149407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40716472.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 122149407 is about 11052.1222848827. The cubic root of 122149407 is about 496.1699456125.

The spelling of 122149407 in words is "one hundred twenty-two million, one hundred forty-nine thousand, four hundred seven".