113148421 has 2 divisors, whose sum is σ = 113148422. Its totient is φ = 113148420.

The previous prime is 113148407. The next prime is 113148433. The reversal of 113148421 is 124841311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98287396 + 14861025 = 9914^2 + 3855^2 .

It is a cyclic number.

It is not a de Polignac number, because 113148421 - 2⁵ = 113148389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113148121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56574210 + 56574211.

It is an arithmetic number, because the mean of its divisors is an integer number (56574211).

Almost surely, 2^113148421 is an apocalyptic number.

It is an amenable number.

113148421 is a deficient number, since it is larger than the sum of its proper divisors (1).

113148421 is an equidigital number, since it uses as much as digits as its factorization.

113148421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 25.

The square root of 113148421 is about 10637.1246584780. The cubic root of 113148421 is about 483.6703880722.

Adding to 113148421 its reverse (124841311), we get a palindrome (237989732).

It can be divided in two parts, 113148 and 421, that added together give a square (113569 = 337²).

The spelling of 113148421 in words is "one hundred thirteen million, one hundred forty-eight thousand, four hundred twenty-one".