121455469 has 4 divisors (see below), whose sum is σ = 122992960. Its totient is φ = 119917980.

The previous prime is 121455457. The next prime is 121455493. The reversal of 121455469 is 964554121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121455469 - 2¹⁷ = 121324397 is a prime.

It is a super-2 number, since 2×121455469² = 29502861900019922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121455409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768627 + ... + 768784.

It is an arithmetic number, because the mean of its divisors is an integer number (30748240).

Almost surely, 2^121455469 is an apocalyptic number.

It is an amenable number.

121455469 is a deficient number, since it is larger than the sum of its proper divisors (1537491).

121455469 is an equidigital number, since it uses as much as digits as its factorization.

121455469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537490.

The product of its digits is 43200, while the sum is 37.

The square root of 121455469 is about 11020.6836902254. The cubic root of 121455469 is about 495.2285704249.

The spelling of 121455469 in words is "one hundred twenty-one million, four hundred fifty-five thousand, four hundred sixty-nine".