121404377 has 2 divisors, whose sum is σ = 121404378. Its totient is φ = 121404376.

The previous prime is 121404347. The next prime is 121404383. The reversal of 121404377 is 773404121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92717641 + 28686736 = 9629^2 + 5356^2 .

It is a cyclic number.

It is not a de Polignac number, because 121404377 - 2⁶ = 121404313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121404347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60702188 + 60702189.

It is an arithmetic number, because the mean of its divisors is an integer number (60702189).

Almost surely, 2^121404377 is an apocalyptic number.

It is an amenable number.

121404377 is a deficient number, since it is larger than the sum of its proper divisors (1).

121404377 is an equidigital number, since it uses as much as digits as its factorization.

121404377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 121404377 is about 11018.3654413892. The cubic root of 121404377 is about 495.1591189980.

Adding to 121404377 its reverse (773404121), we get a palindrome (894808498).

The spelling of 121404377 in words is "one hundred twenty-one million, four hundred four thousand, three hundred seventy-seven".