442542061 has 4 divisors (see below), whose sum is σ = 476583772. Its totient is φ = 408500352.

The previous prime is 442542043. The next prime is 442542073. The reversal of 442542061 is 160245244.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28419561 + 414122500 = 5331^2 + 20350^2 .

It is not a de Polignac number, because 442542061 - 2¹¹ = 442540013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442542031) 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, 17020836 + ... + 17020861.

It is an arithmetic number, because the mean of its divisors is an integer number (119145943).

Almost surely, 2^442542061 is an apocalyptic number.

It is an amenable number.

442542061 is a deficient number, since it is larger than the sum of its proper divisors (34041711).

442542061 is a wasteful number, since it uses less digits than its factorization.

442542061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34041710.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 442542061 is about 21036.6836977695. The cubic root of 442542061 is about 762.0524284049.

The spelling of 442542061 in words is "four hundred forty-two million, five hundred forty-two thousand, sixty-one".