122811240 has 64 divisors (see below), whose sum is σ = 369230400. Its totient is φ = 32678912.

The previous prime is 122811223. The next prime is 122811263. The reversal of 122811240 is 42118221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78304 + ... + 79856.

It is an arithmetic number, because the mean of its divisors is an integer number (5769225).

Almost surely, 2^122811240 is an apocalyptic number.

122811240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122811240 is an abundant number, since it is smaller than the sum of its proper divisors (246419160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122811240 is a wasteful number, since it uses less digits than its factorization.

122811240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226 (or 2222 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 122811240 is about 11082.0232809718. The cubic root of 122811240 is about 497.0644521805.

Adding to 122811240 its reverse (42118221), we get a palindrome (164929461).

The spelling of 122811240 in words is "one hundred twenty-two million, eight hundred eleven thousand, two hundred forty".