11421240 has 32 divisors (see below), whose sum is σ = 34264080. Its totient is φ = 3045632.

The previous prime is 11421233. The next prime is 11421251. The reversal of 11421240 is 4212411.

11421240 is nontrivially palindromic in base 11.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 47469 + ... + 47708.

Almost surely, 2^11421240 is an apocalyptic number.

11421240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11421240 is an abundant number, since it is smaller than the sum of its proper divisors (22842840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11421240 is a wasteful number, since it uses less digits than its factorization.

11421240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95191 (or 95187 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 11421240 is about 3379.5325120496. The cubic root of 11421240 is about 225.2013999179.

Adding to 11421240 its reverse (4212411), we get a palindrome (15633651).

It can be divided in two parts, 1 and 1421240, that added together give a palindrome (1421241).

The spelling of 11421240 in words is "eleven million, four hundred twenty-one thousand, two hundred forty".