12402541 has 8 divisors (see below), whose sum is σ = 12822264. Its totient is φ = 11988480.

The previous prime is 12402527. The next prime is 12402547. The reversal of 12402541 is 14520421.

It can be written as a sum of positive squares in 4 ways, for example, as 3276100 + 9126441 = 1810^2 + 3021^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12402541 - 2¹⁹ = 11878253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3295 + ... + 5971.

It is an arithmetic number, because the mean of its divisors is an integer number (1602783).

Almost surely, 2^12402541 is an apocalyptic number.

It is an amenable number.

12402541 is a deficient number, since it is larger than the sum of its proper divisors (419723).

12402541 is a wasteful number, since it uses less digits than its factorization.

12402541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 12402541 is about 3521.7241516053. The cubic root of 12402541 is about 231.4747145093.

Adding to 12402541 its reverse (14520421), we get a palindrome (26922962).

It can be divided in two parts, 124025 and 41, that multiplied together give a square (5085025 = 2255²).

The spelling of 12402541 in words is "twelve million, four hundred two thousand, five hundred forty-one".