42130279 has 2 divisors, whose sum is σ = 42130280. Its totient is φ = 42130278.

The previous prime is 42130261. The next prime is 42130289. The reversal of 42130279 is 97203124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42130279 - 2¹⁵ = 42097511 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42130289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21065139 + 21065140.

It is an arithmetic number, because the mean of its divisors is an integer number (21065140).

Almost surely, 2^42130279 is an apocalyptic number.

42130279 is a deficient number, since it is larger than the sum of its proper divisors (1).

42130279 is an equidigital number, since it uses as much as digits as its factorization.

42130279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 42130279 is about 6490.7841590982. The cubic root of 42130279 is about 347.9617008761.

It can be divided in two parts, 42 and 130279, that added together give a 4-th power (130321 = 19⁴).

The spelling of 42130279 in words is "forty-two million, one hundred thirty thousand, two hundred seventy-nine".