121241413 has 4 divisors (see below), whose sum is σ = 127622560. Its totient is φ = 114860268.

The previous prime is 121241383. The next prime is 121241423. The reversal of 121241413 is 314142121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 314142121 = 1103 ⋅284807.

It is a cyclic number.

It is not a de Polignac number, because 121241413 - 2¹³ = 121233221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 6381127 = 121241413 / (1 + 2 + 1 + 2 + 4 + 1 + 4 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121241423) 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, 3190545 + ... + 3190582.

It is an arithmetic number, because the mean of its divisors is an integer number (31905640).

Almost surely, 2^121241413 is an apocalyptic number.

It is an amenable number.

121241413 is a deficient number, since it is larger than the sum of its proper divisors (6381147).

121241413 is an equidigital number, since it uses as much as digits as its factorization.

121241413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381146.

The product of its digits is 192, while the sum is 19.

The square root of 121241413 is about 11010.9678502846. The cubic root of 121241413 is about 494.9374651471.

Adding to 121241413 its reverse (314142121), we get a palindrome (435383534).

The spelling of 121241413 in words is "one hundred twenty-one million, two hundred forty-one thousand, four hundred thirteen".