122445540 has 192 divisors, whose sum is σ = 450777600. Its totient is φ = 26998272.

The previous prime is 122445539. The next prime is 122445559. The reversal of 122445540 is 45544221.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 109062 + ... + 110178.

It is an arithmetic number, because the mean of its divisors is an integer number (2347800).

Almost surely, 2^122445540 is an apocalyptic number.

122445540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122445540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225388800).

122445540 is an abundant number, since it is smaller than the sum of its proper divisors (328332060).

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

122445540 is a wasteful number, since it uses less digits than its factorization.

122445540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 122445540 is about 11065.5112850695. The cubic root of 122445540 is about 496.5705853408.

Adding to 122445540 its reverse (45544221), we get a palindrome (167989761).

It can be divided in two parts, 1224 and 45540, that added together give a palindrome (46764).

The spelling of 122445540 in words is "one hundred twenty-two million, four hundred forty-five thousand, five hundred forty".