121522842 has 96 divisors (see below), whose sum is σ = 318864000. Its totient is φ = 34720812.

The previous prime is 121522829. The next prime is 121522889. The reversal of 121522842 is 248225121.

It is a super-2 number, since 2×121522842² = 29535602255513928, which contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 17360403 + ... + 17360409.

It is an arithmetic number, because the mean of its divisors is an integer number (3321500).

Almost surely, 2^121522842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121522842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159432000).

121522842 is an abundant number, since it is smaller than the sum of its proper divisors (197341158).

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

121522842 is an frugal number, since it uses more digits than its factorization.

121522842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56 (or 12 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 121522842 is about 11023.7399279918. The cubic root of 121522842 is about 495.3201235055.

Adding to 121522842 its reverse (248225121), we get a palindrome (369747963).

The spelling of 121522842 in words is "one hundred twenty-one million, five hundred twenty-two thousand, eight hundred forty-two".