42897446 has 4 divisors (see below), whose sum is σ = 64346172. Its totient is φ = 21448722.

The previous prime is 42897431. The next prime is 42897451. The reversal of 42897446 is 64479824.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42897397 and 42897406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10724360 + ... + 10724363.

It is an arithmetic number, because the mean of its divisors is an integer number (16086543).

Almost surely, 2^42897446 is an apocalyptic number.

42897446 is a deficient number, since it is larger than the sum of its proper divisors (21448726).

42897446 is a wasteful number, since it uses less digits than its factorization.

42897446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21448725.

The product of its digits is 387072, while the sum is 44.

The square root of 42897446 is about 6549.6141871106. The cubic root of 42897446 is about 350.0610668956.

The spelling of 42897446 in words is "forty-two million, eight hundred ninety-seven thousand, four hundred forty-six".