117436421 has 2 divisors, whose sum is σ = 117436422. Its totient is φ = 117436420.

The previous prime is 117436411. The next prime is 117436433. The reversal of 117436421 is 124634711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109956196 + 7480225 = 10486^2 + 2735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117436421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117436411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58718210 + 58718211.

It is an arithmetic number, because the mean of its divisors is an integer number (58718211).

Almost surely, 2^117436421 is an apocalyptic number.

It is an amenable number.

117436421 is a deficient number, since it is larger than the sum of its proper divisors (1).

117436421 is an equidigital number, since it uses as much as digits as its factorization.

117436421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 117436421 is about 10836.8086169315. The cubic root of 117436421 is about 489.7046964259.

The spelling of 117436421 in words is "one hundred seventeen million, four hundred thirty-six thousand, four hundred twenty-one".