121943562 has 64 divisors (see below), whose sum is σ = 277191936. Its totient is φ = 35481600.

The previous prime is 121943561. The next prime is 121943573. The reversal of 121943562 is 265349121.

It is not an unprimeable number, because it can be changed into a prime (121943561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180858 + ... + 181530.

It is an arithmetic number, because the mean of its divisors is an integer number (4331124).

Almost surely, 2^121943562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121943562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138595968).

121943562 is an abundant number, since it is smaller than the sum of its proper divisors (155248374).

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

121943562 is a wasteful number, since it uses less digits than its factorization.

121943562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815.

The product of its digits is 12960, while the sum is 33.

The square root of 121943562 is about 11042.8058934313. The cubic root of 121943562 is about 495.8910753051.

The spelling of 121943562 in words is "one hundred twenty-one million, nine hundred forty-three thousand, five hundred sixty-two".