122945761 has 4 divisors (see below), whose sum is σ = 127185300. Its totient is φ = 118706224.

The previous prime is 122945759. The next prime is 122945791. The reversal of 122945761 is 167549221.

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 54982225 + 67963536 = 7415^2 + 8244^2 .

It is a cyclic number.

It is not a de Polignac number, because 122945761 - 2¹ = 122945759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122945761.

It is not an unprimeable number, because it can be changed into a prime (122945701) 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, 2119726 + ... + 2119783.

It is an arithmetic number, because the mean of its divisors is an integer number (31796325).

Almost surely, 2^122945761 is an apocalyptic number.

It is an amenable number.

122945761 is a deficient number, since it is larger than the sum of its proper divisors (4239539).

122945761 is an equidigital number, since it uses as much as digits as its factorization.

122945761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239538.

The product of its digits is 30240, while the sum is 37.

The square root of 122945761 is about 11088.0909538117. The cubic root of 122945761 is about 497.2458720797.

The spelling of 122945761 in words is "one hundred twenty-two million, nine hundred forty-five thousand, seven hundred sixty-one".