442071311 has 4 divisors (see below), whose sum is σ = 482259624. Its totient is φ = 401883000.

The previous prime is 442071269. The next prime is 442071313. The reversal of 442071311 is 113170244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442071311 - 2²⁶ = 374962447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442071313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20094140 + ... + 20094161.

It is an arithmetic number, because the mean of its divisors is an integer number (120564906).

Almost surely, 2^442071311 is an apocalyptic number.

442071311 is a deficient number, since it is larger than the sum of its proper divisors (40188313).

442071311 is a wasteful number, since it uses less digits than its factorization.

442071311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40188312.

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

The square root of 442071311 is about 21025.4919324139. The cubic root of 442071311 is about 761.7821238107.

The spelling of 442071311 in words is "four hundred forty-two million, seventy-one thousand, three hundred eleven".