42894397 has 24 divisors (see below), whose sum is σ = 53758080. Its totient is φ = 33508800.

The previous prime is 42894391. The next prime is 42894431. The reversal of 42894397 is 79349824.

It is a happy number.

It is not a de Polignac number, because 42894397 - 2³ = 42894389 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 (42894391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119304 + ... + 119662.

It is an arithmetic number, because the mean of its divisors is an integer number (2239920).

Almost surely, 2^42894397 is an apocalyptic number.

It is an amenable number.

42894397 is a deficient number, since it is larger than the sum of its proper divisors (10863683).

42894397 is a wasteful number, since it uses less digits than its factorization.

42894397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 480 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 42894397 is about 6549.3814211725. The cubic root of 42894397 is about 350.0527729949.

The spelling of 42894397 in words is "forty-two million, eight hundred ninety-four thousand, three hundred ninety-seven".