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121461 = 340487

121461 has 4 divisors (see below), whose sum is σ = 161952. Its totient is φ = 80972.

The previous prime is 121453. The next prime is 121469. The reversal of 121461 is 164121.

Adding to 121461 its reverse (164121), we get a palindrome (285582).

It can be divided in two parts, 1214 and 61, that added together give a triangular number (1275 = T50).

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 an interprime number because it is at equal distance from previous prime (121453) and next prime (121469).

It is a cyclic number.

It is not a de Polignac number, because 121461 - 23 = 121453 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20241 + ... + 20246.

It is an arithmetic number, because the mean of its divisors is an integer number (40488).

2121461 is an apocalyptic number.

It is an amenable number.

121461 is a deficient number, since it is larger than the sum of its proper divisors (40491).

121461 is an equidigital number, since it uses as much as digits as its factorization.

121461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40490.

The product of its digits is 48, while the sum is 15.

The square root of 121461 is about 348.5125535759. The cubic root of 121461 is about 49.5236087769.

The spelling of 121461 in words is "one hundred twenty-one thousand, four hundred sixty-one".

Divisors: 1 3 40487 121461