122131545 has 8 divisors (see below), whose sum is σ = 195410496. Its totient is φ = 65136816.

The previous prime is 122131543. The next prime is 122131549. The reversal of 122131545 is 545131221.

It is a happy number.

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

It is not a de Polignac number, because 122131545 - 2¹ = 122131543 is a prime.

It is a super-2 number, since 2×122131545² = 29832228568174050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122131543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4071037 + ... + 4071066.

It is an arithmetic number, because the mean of its divisors is an integer number (24426312).

Almost surely, 2^122131545 is an apocalyptic number.

122131545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122131545 is a deficient number, since it is larger than the sum of its proper divisors (73278951).

122131545 is an equidigital number, since it uses as much as digits as its factorization.

122131545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8142111.

The product of its digits is 1200, while the sum is 24.

The square root of 122131545 is about 11051.3141752463. The cubic root of 122131545 is about 496.1457593316.

Adding to 122131545 its reverse (545131221), we get a palindrome (667262766).

The spelling of 122131545 in words is "one hundred twenty-two million, one hundred thirty-one thousand, five hundred forty-five".