42361777 has 2 divisors, whose sum is σ = 42361778. Its totient is φ = 42361776.

The previous prime is 42361771. The next prime is 42361793. The reversal of 42361777 is 77716324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34527376 + 7834401 = 5876^2 + 2799^2 .

It is a cyclic number.

It is not a de Polignac number, because 42361777 - 2³ = 42361769 is a prime.

It is not a weakly prime, because it can be changed into another prime (42361771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21180888 + 21180889.

It is an arithmetic number, because the mean of its divisors is an integer number (21180889).

Almost surely, 2^42361777 is an apocalyptic number.

It is an amenable number.

42361777 is a deficient number, since it is larger than the sum of its proper divisors (1).

42361777 is an equidigital number, since it uses as much as digits as its factorization.

42361777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49392, while the sum is 37.

The square root of 42361777 is about 6508.5925513893. The cubic root of 42361777 is about 348.5978652397.

The spelling of 42361777 in words is "forty-two million, three hundred sixty-one thousand, seven hundred seventy-seven".