12442740 has 48 divisors (see below), whose sum is σ = 36046080. Its totient is φ = 3203200.

The previous prime is 12442699. The next prime is 12442741. The reversal of 12442740 is 4724421.

It is a self number, because there is not a number n which added to its sum of digits gives 12442740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1836 + ... + 5315.

It is an arithmetic number, because the mean of its divisors is an integer number (750960).

Almost surely, 2^12442740 is an apocalyptic number.

12442740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12442740 is an abundant number, since it is smaller than the sum of its proper divisors (23603340).

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

12442740 is a wasteful number, since it uses less digits than its factorization.

12442740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7192 (or 7190 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 12442740 is about 3527.4268241879. The cubic root of 12442740 is about 231.7245293648.

The spelling of 12442740 in words is "twelve million, four hundred forty-two thousand, seven hundred forty".