42974565 has 16 divisors (see below), whose sum is σ = 69113088. Its totient is φ = 22801856.

The previous prime is 42974543. The next prime is 42974593. The reversal of 42974565 is 56547924.

42974565 = T₂₅₆ + T₂₅₇ + ... + T₆₄₉.

It is a cyclic number.

It is not a de Polignac number, because 42974565 - 2¹³ = 42966373 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4317 + ... + 10226.

It is an arithmetic number, because the mean of its divisors is an integer number (4319568).

Almost surely, 2^42974565 is an apocalyptic number.

It is an amenable number.

42974565 is a deficient number, since it is larger than the sum of its proper divisors (26138523).

42974565 is a wasteful number, since it uses less digits than its factorization.

42974565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14748.

The product of its digits is 302400, while the sum is 42.

The square root of 42974565 is about 6555.4988368544. The cubic root of 42974565 is about 350.2707157246.

The spelling of 42974565 in words is "forty-two million, nine hundred seventy-four thousand, five hundred sixty-five".