122540455 has 8 divisors (see below), whose sum is σ = 148910400. Its totient is φ = 96791136.

The previous prime is 122540441. The next prime is 122540461. The reversal of 122540455 is 554045221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122540455 is a prime.

It is a super-2 number, since 2×122540455² = 30032326223214050, which contains 22 as substring.

It is a congruent 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, 154720 + ... + 155509.

It is an arithmetic number, because the mean of its divisors is an integer number (18613800).

Almost surely, 2^122540455 is an apocalyptic number.

122540455 is a deficient number, since it is larger than the sum of its proper divisors (26369945).

122540455 is an equidigital number, since it uses as much as digits as its factorization.

122540455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310313.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 122540455 is about 11069.7992303384. The cubic root of 122540455 is about 496.6988595762.

Adding to 122540455 its reverse (554045221), we get a palindrome (676585676).

The spelling of 122540455 in words is "one hundred twenty-two million, five hundred forty thousand, four hundred fifty-five".