42897854 has 4 divisors (see below), whose sum is σ = 64346784. Its totient is φ = 21448926.

The previous prime is 42897853. The next prime is 42897857. The reversal of 42897854 is 45879824.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 42897799 and 42897808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42897853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10724462 + ... + 10724465.

It is an arithmetic number, because the mean of its divisors is an integer number (16086696).

Almost surely, 2^42897854 is an apocalyptic number.

42897854 is a deficient number, since it is larger than the sum of its proper divisors (21448930).

42897854 is a wasteful number, since it uses less digits than its factorization.

42897854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21448929.

The product of its digits is 645120, while the sum is 47.

The square root of 42897854 is about 6549.6453339093. The cubic root of 42897854 is about 350.0621767089.

The spelling of 42897854 in words is "forty-two million, eight hundred ninety-seven thousand, eight hundred fifty-four".