121436437 has 2 divisors, whose sum is σ = 121436438. Its totient is φ = 121436436.

The previous prime is 121436411. The next prime is 121436443. The reversal of 121436437 is 734634121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116445681 + 4990756 = 10791^2 + 2234^2 .

It is a cyclic number.

It is not a de Polignac number, because 121436437 - 2⁷ = 121436309 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121436399 and 121436408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121436477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60718218 + 60718219.

It is an arithmetic number, because the mean of its divisors is an integer number (60718219).

Almost surely, 2^121436437 is an apocalyptic number.

It is an amenable number.

121436437 is a deficient number, since it is larger than the sum of its proper divisors (1).

121436437 is an equidigital number, since it uses as much as digits as its factorization.

121436437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 121436437 is about 11019.8201890956. The cubic root of 121436437 is about 495.2027017325.

The spelling of 121436437 in words is "one hundred twenty-one million, four hundred thirty-six thousand, four hundred thirty-seven".