121040535 has 72 divisors (see below), whose sum is σ = 247807728. Its totient is φ = 50265600.

The previous prime is 121040533. The next prime is 121040539. The reversal of 121040535 is 535040121.

It is not a de Polignac number, because 121040535 - 2¹ = 121040533 is a prime.

It is a super-2 number, since 2×121040535² = 29301622226172450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121040533) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 88255 + ... + 89615.

It is an arithmetic number, because the mean of its divisors is an integer number (3441774).

Almost surely, 2^121040535 is an apocalyptic number.

121040535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121040535 is an abundant number, since it is smaller than the sum of its proper divisors (126767193).

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

121040535 is a wasteful number, since it uses less digits than its factorization.

121040535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 121040535 is about 11001.8423457165. The cubic root of 121040535 is about 494.6639694683.

Adding to 121040535 its reverse (535040121), we get a palindrome (656080656).

The spelling of 121040535 in words is "one hundred twenty-one million, forty thousand, five hundred thirty-five".