121412537 has 4 divisors (see below), whose sum is σ = 121440756. Its totient is φ = 121384320.

The previous prime is 121412519. The next prime is 121412549. The reversal of 121412537 is 735214121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 735214121 = 241 ⋅3050681.

It can be written as a sum of positive squares in 2 ways, for example, as 79370281 + 42042256 = 8909^2 + 6484^2 .

It is a cyclic number.

It is not a de Polignac number, because 121412537 - 2²⁶ = 54303673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121412587) 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 3 ways as a sum of consecutive naturals, for example, 6164 + ... + 16757.

It is an arithmetic number, because the mean of its divisors is an integer number (30360189).

Almost surely, 2^121412537 is an apocalyptic number.

It is an amenable number.

121412537 is a deficient number, since it is larger than the sum of its proper divisors (28219).

121412537 is an equidigital number, since it uses as much as digits as its factorization.

121412537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28218.

The product of its digits is 1680, while the sum is 26.

The square root of 121412537 is about 11018.7357260259. The cubic root of 121412537 is about 495.1702125242.

Adding to 121412537 its reverse (735214121), we get a palindrome (856626658).

The spelling of 121412537 in words is "one hundred twenty-one million, four hundred twelve thousand, five hundred thirty-seven".