42147311 has 2 divisors, whose sum is σ = 42147312. Its totient is φ = 42147310.

The previous prime is 42147307. The next prime is 42147319. The reversal of 42147311 is 11374124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42147311 - 2² = 42147307 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42147319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21073655 + 21073656.

It is an arithmetic number, because the mean of its divisors is an integer number (21073656).

Almost surely, 2^42147311 is an apocalyptic number.

42147311 is a deficient number, since it is larger than the sum of its proper divisors (1).

42147311 is an equidigital number, since it uses as much as digits as its factorization.

42147311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 42147311 is about 6492.0960405712. The cubic root of 42147311 is about 348.0085846960.

The spelling of 42147311 in words is "forty-two million, one hundred forty-seven thousand, three hundred eleven".