42030277 has 2 divisors, whose sum is σ = 42030278. Its totient is φ = 42030276.

The previous prime is 42030259. The next prime is 42030319. The reversal of 42030277 is 77203024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40883236 + 1147041 = 6394^2 + 1071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42030277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42030217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21015138 + 21015139.

It is an arithmetic number, because the mean of its divisors is an integer number (21015139).

Almost surely, 2^42030277 is an apocalyptic number.

It is an amenable number.

42030277 is a deficient number, since it is larger than the sum of its proper divisors (1).

42030277 is an equidigital number, since it uses as much as digits as its factorization.

42030277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 42030277 is about 6483.0761988426. The cubic root of 42030277 is about 347.6861711390.

The spelling of 42030277 in words is "forty-two million, thirty thousand, two hundred seventy-seven".