122129465 has 4 divisors (see below), whose sum is σ = 146555364. Its totient is φ = 97703568.

The previous prime is 122129461. The next prime is 122129519. The reversal of 122129465 is 564921221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564921221 = 829 ⋅681449.

It can be written as a sum of positive squares in 2 ways, for example, as 88303609 + 33825856 = 9397^2 + 5816^2 .

It is a cyclic number.

It is not a de Polignac number, because 122129465 - 2² = 122129461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122129461) 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, 12212942 + ... + 12212951.

It is an arithmetic number, because the mean of its divisors is an integer number (36638841).

Almost surely, 2^122129465 is an apocalyptic number.

It is an amenable number.

122129465 is a deficient number, since it is larger than the sum of its proper divisors (24425899).

122129465 is an equidigital number, since it uses as much as digits as its factorization.

122129465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24425898.

The product of its digits is 8640, while the sum is 32.

The square root of 122129465 is about 11051.2200683906. The cubic root of 122129465 is about 496.1429427264.

The spelling of 122129465 in words is "one hundred twenty-two million, one hundred twenty-nine thousand, four hundred sixty-five".