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124421 = 1111311

124421 has 4 divisors (see below), whose sum is σ = 135744. Its totient is φ = 113100.

The previous prime is 124367. The next prime is 124427.

124421 is nontrivially palindromic in base 10.

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 124421 - 210 = 123397 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 124396 and 124405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124427) 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, 5645 + ... + 5666.

It is an arithmetic number, because the mean of its divisors is an integer number (33936).

2124421 is an apocalyptic number.

124421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

124421 is a deficient number, since it is larger than the sum of its proper divisors (11323).

124421 is a wasteful number, since it uses less digits than its factorization.

124421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11322.

The product of its digits is 64, while the sum is 14.

The square root of 124421 is about 352.7336105335. The cubic root of 124421 is about 49.9226804955.

It can be divided in two parts, 124 and 421, that added together give a palindrome (545).

The spelling of 124421 in words is "one hundred twenty-four thousand, four hundred twenty-one", and thus it is an iban number.

Divisors: 1 11 11311 124421