42141977 has 2 divisors, whose sum is σ = 42141978. Its totient is φ = 42141976.

The previous prime is 42141971. The next prime is 42141991. The reversal of 42141977 is 77914124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41938576 + 203401 = 6476^2 + 451^2 .

It is a cyclic number.

It is not a de Polignac number, because 42141977 - 2⁴ = 42141961 is a prime.

It is not a weakly prime, because it can be changed into another prime (42141971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21070988 + 21070989.

It is an arithmetic number, because the mean of its divisors is an integer number (21070989).

Almost surely, 2^42141977 is an apocalyptic number.

It is an amenable number.

42141977 is a deficient number, since it is larger than the sum of its proper divisors (1).

42141977 is an equidigital number, since it uses as much as digits as its factorization.

42141977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 35.

The square root of 42141977 is about 6491.6852203415. The cubic root of 42141977 is about 347.9939032049.

The spelling of 42141977 in words is "forty-two million, one hundred forty-one thousand, nine hundred seventy-seven".