122640265 has 8 divisors (see below), whose sum is σ = 160547328. Its totient is φ = 89192880.

The previous prime is 122640253. The next prime is 122640281. The reversal of 122640265 is 562046221.

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

It is not a de Polignac number, because 122640265 - 2⁵ = 122640233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114857 + ... + 1114966.

It is an arithmetic number, because the mean of its divisors is an integer number (20068416).

Almost surely, 2^122640265 is an apocalyptic number.

It is an amenable number.

122640265 is a deficient number, since it is larger than the sum of its proper divisors (37907063).

122640265 is a wasteful number, since it uses less digits than its factorization.

122640265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229839.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 122640265 is about 11074.3065245640. The cubic root of 122640265 is about 496.8336777998.

Adding to 122640265 its reverse (562046221), we get a palindrome (684686486).

The spelling of 122640265 in words is "one hundred twenty-two million, six hundred forty thousand, two hundred sixty-five".