121435853 has 16 divisors (see below), whose sum is σ = 151663104. Its totient is φ = 94461360.

The previous prime is 121435843. The next prime is 121435871. The reversal of 121435853 is 358534121.

It is not a de Polignac number, because 121435853 - 2¹² = 121431757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121435823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62726 + ... + 64632.

It is an arithmetic number, because the mean of its divisors is an integer number (9478944).

Almost surely, 2^121435853 is an apocalyptic number.

It is an amenable number.

121435853 is a deficient number, since it is larger than the sum of its proper divisors (30227251).

121435853 is a wasteful number, since it uses less digits than its factorization.

121435853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752.

The product of its digits is 14400, while the sum is 32.

The square root of 121435853 is about 11019.7936913538. The cubic root of 121435853 is about 495.2019079047.

Adding to 121435853 its reverse (358534121), we get a palindrome (479969974).

The spelling of 121435853 in words is "one hundred twenty-one million, four hundred thirty-five thousand, eight hundred fifty-three".