42386977 has 2 divisors, whose sum is σ = 42386978. Its totient is φ = 42386976.

The previous prime is 42386923. The next prime is 42386987. The reversal of 42386977 is 77968324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29419776 + 12967201 = 5424^2 + 3601^2 .

It is a cyclic number.

It is not a de Polignac number, because 42386977 - 2²³ = 33998369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42386987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21193488 + 21193489.

It is an arithmetic number, because the mean of its divisors is an integer number (21193489).

Almost surely, 2^42386977 is an apocalyptic number.

It is an amenable number.

42386977 is a deficient number, since it is larger than the sum of its proper divisors (1).

42386977 is an equidigital number, since it uses as much as digits as its factorization.

42386977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 42386977 is about 6510.5281659785. The cubic root of 42386977 is about 348.6669756931. Note that the first 3 decimals are identical.

The spelling of 42386977 in words is "forty-two million, three hundred eighty-six thousand, nine hundred seventy-seven".