442142040 has 32 divisors (see below), whose sum is σ = 1326426480. Its totient is φ = 117904512.

The previous prime is 442141957. The next prime is 442142053. The reversal of 442142040 is 40241244.

It is a junction number, because it is equal to n+sod(n) for n = 442141998 and 442142016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1842139 + ... + 1842378.

Almost surely, 2^442142040 is an apocalyptic number.

442142040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442142040 is an abundant number, since it is smaller than the sum of its proper divisors (884284440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442142040 is a wasteful number, since it uses less digits than its factorization.

442142040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3684531 (or 3684527 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 442142040 is about 21027.1738471912. The cubic root of 442142040 is about 761.8227486400.

Adding to 442142040 its reverse (40241244), we get a palindrome (482383284).

The spelling of 442142040 in words is "four hundred forty-two million, one hundred forty-two thousand, forty".