122713145 has 8 divisors (see below), whose sum is σ = 147384456. Its totient is φ = 98084736.

The previous prime is 122713133. The next prime is 122713189. The reversal of 122713145 is 541317221.

It can be written as a sum of positive squares in 4 ways, for example, as 212521 + 122500624 = 461^2 + 11068^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 122713145 - 2¹⁸ = 122451001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4052 + ... + 16181.

It is an arithmetic number, because the mean of its divisors is an integer number (18423057).

Almost surely, 2^122713145 is an apocalyptic number.

It is an amenable number.

122713145 is a deficient number, since it is larger than the sum of its proper divisors (24671311).

122713145 is a wasteful number, since it uses less digits than its factorization.

122713145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21451.

The product of its digits is 1680, while the sum is 26.

The square root of 122713145 is about 11077.5965353501. The cubic root of 122713145 is about 496.9320741632.

The spelling of 122713145 in words is "one hundred twenty-two million, seven hundred thirteen thousand, one hundred forty-five".