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121361893 is a prime number
BaseRepresentation
bin1110011101111…
…01010111100101
322110100211012221
413032331113211
5222032040033
620013112341
73002362522
oct716752745
9273324187
10121361893
1162561a94
12347886b1
131c1b2a93
1412192149
15a9c412d
hex73bd5e5

121361893 has 2 divisors, whose sum is σ = 121361894. Its totient is φ = 121361892.

The previous prime is 121361837. The next prime is 121361899. The reversal of 121361893 is 398163121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117353889 + 4008004 = 10833^2 + 2002^2 .

It is a cyclic number.

It is not a de Polignac number, because 121361893 - 29 = 121361381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121361899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60680946 + 60680947.

It is an arithmetic number, because the mean of its divisors is an integer number (60680947).

Almost surely, 2121361893 is an apocalyptic number.

It is an amenable number.

121361893 is a deficient number, since it is larger than the sum of its proper divisors (1).

121361893 is an equidigital number, since it uses as much as digits as its factorization.

121361893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 121361893 is about 11016.4374005393. The cubic root of 121361893 is about 495.1013539355.

The spelling of 121361893 in words is "one hundred twenty-one million, three hundred sixty-one thousand, eight hundred ninety-three".