122689465 has 4 divisors (see below), whose sum is σ = 147227364. Its totient is φ = 98151568.

The previous prime is 122689451. The next prime is 122689481. The reversal of 122689465 is 564986221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564986221 = 8861 ⋅63761.

It can be written as a sum of positive squares in 2 ways, for example, as 75203584 + 47485881 = 8672^2 + 6891^2 .

It is a cyclic number.

It is not a de Polignac number, because 122689465 - 2¹⁵ = 122656697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12268942 + ... + 12268951.

It is an arithmetic number, because the mean of its divisors is an integer number (36806841).

Almost surely, 2^122689465 is an apocalyptic number.

It is an amenable number.

122689465 is a deficient number, since it is larger than the sum of its proper divisors (24537899).

122689465 is an equidigital number, since it uses as much as digits as its factorization.

122689465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24537898.

The product of its digits is 207360, while the sum is 43.

The square root of 122689465 is about 11076.5276598761. The cubic root of 122689465 is about 496.9001077196.

The spelling of 122689465 in words is "one hundred twenty-two million, six hundred eighty-nine thousand, four hundred sixty-five".