121342536 has 192 divisors, whose sum is σ = 401681280. Its totient is φ = 33592320.

The previous prime is 121342519. The next prime is 121342537. The reversal of 121342536 is 635243121.

121342536 is a `hidden beast` number, since 121 + 3 + 4 + 2 + 536 = 666.

It is a super-2 number, since 2×121342536² = 29448022085822592, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (121342537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 503376 + ... + 503616.

It is an arithmetic number, because the mean of its divisors is an integer number (2092090).

Almost surely, 2^121342536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121342536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200840640).

121342536 is an abundant number, since it is smaller than the sum of its proper divisors (280338744).

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

121342536 is a wasteful number, since it uses less digits than its factorization.

121342536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 290 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 121342536 is about 11015.5588146948. The cubic root of 121342536 is about 495.0750299490.

Adding to 121342536 its reverse (635243121), we get a palindrome (756585657).

The spelling of 121342536 in words is "one hundred twenty-one million, three hundred forty-two thousand, five hundred thirty-six".