42561446 has 8 divisors (see below), whose sum is σ = 63980280. Its totient is φ = 21234688.

The previous prime is 42561413. The next prime is 42561503. The reversal of 42561446 is 64416524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42561446² = 3622953371221832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21851 + ... + 23718.

It is an arithmetic number, because the mean of its divisors is an integer number (7997535).

Almost surely, 2^42561446 is an apocalyptic number.

42561446 is a deficient number, since it is larger than the sum of its proper divisors (21418834).

42561446 is a wasteful number, since it uses less digits than its factorization.

42561446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46038.

The product of its digits is 23040, while the sum is 32.

The square root of 42561446 is about 6523.9133961143. The cubic root of 42561446 is about 349.1447034473.

The spelling of 42561446 in words is "forty-two million, five hundred sixty-one thousand, four hundred forty-six".