121477 has 4 divisors (see below), whose sum is σ = 122176. Its totient is φ = 120780.

The previous prime is 121469. The next prime is 121487. The reversal of 121477 is 774121.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 121477 - 2³ = 121469 is a prime.

It is a Duffinian number.

121477 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121447) 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, 148 + ... + 514.

It is an arithmetic number, because the mean of its divisors is an integer number (30544).

2¹²¹⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

121477 is a deficient number, since it is larger than the sum of its proper divisors (699).

121477 is an equidigital number, since it uses as much as digits as its factorization.

121477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698.

The product of its digits is 392, while the sum is 22.

The square root of 121477 is about 348.5355075168. The cubic root of 121477 is about 49.5257832553.

Adding to 121477 its reverse (774121), we get a palindrome (895598).

The spelling of 121477 in words is "one hundred twenty-one thousand, four hundred seventy-seven", and thus it is an iban number.