442078061 has 4 divisors (see below), whose sum is σ = 443928000. Its totient is φ = 440228124.

The previous prime is 442078057. The next prime is 442078069. The reversal of 442078061 is 160870244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442078061 - 2² = 442078057 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 (442078069) 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, 924611 + ... + 925088.

It is an arithmetic number, because the mean of its divisors is an integer number (110982000).

Almost surely, 2^442078061 is an apocalyptic number.

It is an amenable number.

442078061 is a deficient number, since it is larger than the sum of its proper divisors (1849939).

442078061 is a wasteful number, since it uses less digits than its factorization.

442078061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849938.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 442078061 is about 21025.6524512320. The cubic root of 442078061 is about 761.7860010156.

The spelling of 442078061 in words is "four hundred forty-two million, seventy-eight thousand, sixty-one".