122566541 has 4 divisors (see below), whose sum is σ = 124644000. Its totient is φ = 120489084.

The previous prime is 122566523. The next prime is 122566567. The reversal of 122566541 is 145665221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 145665221 = 13 ⋅11205017.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122566541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122566498 and 122566507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122566501) 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, 1038641 + ... + 1038758.

It is an arithmetic number, because the mean of its divisors is an integer number (31161000).

Almost surely, 2^122566541 is an apocalyptic number.

It is an amenable number.

122566541 is a deficient number, since it is larger than the sum of its proper divisors (2077459).

122566541 is an equidigital number, since it uses as much as digits as its factorization.

122566541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077458.

The product of its digits is 14400, while the sum is 32.

The square root of 122566541 is about 11070.9774184577. The cubic root of 122566541 is about 496.7341022698.

The spelling of 122566541 in words is "one hundred twenty-two million, five hundred sixty-six thousand, five hundred forty-one".