42142319 has 2 divisors, whose sum is σ = 42142320. Its totient is φ = 42142318.

The previous prime is 42142267. The next prime is 42142327. The reversal of 42142319 is 91324124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42142319 is a prime.

It is a super-2 number, since 2×42142319² = 3551950101395522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42142339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21071159 + 21071160.

It is an arithmetic number, because the mean of its divisors is an integer number (21071160).

Almost surely, 2^42142319 is an apocalyptic number.

42142319 is a deficient number, since it is larger than the sum of its proper divisors (1).

42142319 is an equidigital number, since it uses as much as digits as its factorization.

42142319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 42142319 is about 6491.7115616762. The cubic root of 42142319 is about 347.9948445751.

The spelling of 42142319 in words is "forty-two million, one hundred forty-two thousand, three hundred nineteen".