122981544 has 128 divisors (see below), whose sum is σ = 393600000. Its totient is φ = 34852032.

The previous prime is 122981533. The next prime is 122981569. The reversal of 122981544 is 445189221.

122981544 is a `hidden beast` number, since 1 + 22 + 98 + 1 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 122981499 and 122981508.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246207 + ... + 246705.

It is an arithmetic number, because the mean of its divisors is an integer number (3075000).

Almost surely, 2^122981544 is an apocalyptic number.

122981544 is a gapful number since it is divisible by the number (14) 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 122981544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196800000).

122981544 is an abundant number, since it is smaller than the sum of its proper divisors (270618456).

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

122981544 is a wasteful number, since it uses less digits than its factorization.

122981544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 674 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 122981544 is about 11089.7044144558. The cubic root of 122981544 is about 497.2941080470.

The spelling of 122981544 in words is "one hundred twenty-two million, nine hundred eighty-one thousand, five hundred forty-four".